Serious Stargazing: Spot Bright Star Sirius This Week






Around this time of year, I often get lots of inquiries concerning a certain very bright star-like object shining over toward the southern part of the sky. It’s Sirius, the Dog Star, the brightest star in the night sky. 


Granted, the planet Jupiter currently shines three times brighter and appears much higher in the sky, but while Jupiter shines with a steady, silvery glow, Sirius will remind you of the famous early 19th century limerick, “Twinkle Twinkle Little Star” written by the English poet, Jane Taylor, for indeed, Sirius seems to shine “like a diamond in the sky.”  Who knows?  Maybe Taylor was inspired by gazing upon Sirius.






Not a few astronomy books suggest that you can locate Sirius by using the belt of Orion, as the belt points southeast directly toward Sirius — as if anyone needed a way to find this dazzling luminary! While it is true that Orion’s three-star belt will direct you toward Sirius, all anyone needs to do is simply cast a glance toward the southern sky during these cold winter evenings and they’ll immediately see it. It will be due south between 8:30 and 9 p.m. local time all of this week, and sets in the southwest between 1:30 and 2 a.m.


So bright, so near


Sirius is the brightest star of the constellation Canis Major, the “Greater Dog” in Latin.


According to Burnham’s Celestial Handbook, other names for it include “The Sparkling One” or “The Scorching One.” The star appears a brilliant white with a tinge of blue, but when the air is unsteady, or when the star is low to the horizon, it seems to flicker and splinter with all the colors of the rainbow. 


At a distance of just 8.7 light-years, Sirius is the fifth-nearest known star. Among the naked-eye stars, it is the nearest of all, with the sole exception of Alpha Centauri. Sirius is gradually moving closer to the solar system, so it will slightly increase in brightness over the next 60,000 years. After that time its distance will begin to recede, but it will continue to be the brightest star in the Earth’s sky for the next 210,000 years. [The Nearest Stars to Earth (Infographic)]


The Dog Star has a pup


Over thousands of years, Sirius appears to move in a wavy line across the sky. 


In 1862, Alvan G. Clark first saw Sirius B, also known as “the Pup,” the companion star responsible for the wiggle. Sirius B is only one ten-thousandth as bright as Sirius A, but by 1914, spectroscopic observations had demonstrated that its temperature was about the same. From physical laws it follows that B emits the same amount of light per unit surface area as A, and therefore to be so dim, it must be very small. 


Later calculations have shown that A has just over twice the mass of our sun, but B has nearly one solar mass. Since it is so small, B must be exceedingly dense. 


In fact, it packs 98 percent of one solar mass into a body just 2 percent of the sun’s diameter. To do that, Sirius B must have a density 90,000 times that of the sun. A teaspoon of this star material would weigh about 2 tons!


Look for Canopus


Now is also the time of the year for southerly observers to look for Canopus, in the constellation of Carina, the Keel (part of the now-defunct constellation of Argo Navis, the Ship). 


Canopus still holds its rank as second only to Sirius in apparent brightness. The two stars differ by 0.8 magnitudes, so that Canopus is about half as bright as Sirius. But the former is more than 34 times as distant from us.


And, in fact, intrinsically, the luminary in Carina outshines the one in Canis Major by about 600 times.  This week, if you are anywhere south of north latitude 37.6 degrees, you can get a glimpse of Canopus as it skims just above the southern horizon, almost directly south of Sirius around 8:30 p.m.


Joe Rao serves as an instructor and guest lecturer at New York’s Hayden Planetarium. He writes about astronomy for The New York Times and other publications, and he is also an on-camera meteorologist for News 12 Westchester, New York.


Copyright 2013 SPACE.com, a TechMediaNetwork company. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.
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Daytona 500 still a go despite accident that injured fans









DAYTONA BEACH, Fla. —





The Daytona 500 NASCAR race will go ahead on Sunday despite a crash on Saturday that injured more than 20 fans, questions over the safety of the famous speedway and the possibility of lawsuits.

Officials said they had repaired the fencing that was damaged after the pile-up which sent debris flying into the crowd and injuring fans on the final lap of Saturday's second-tier Nationwide race.






Halifax Health spokesman Byron Cogdell said that seven people were treated for injuries at their facility but two who had initially been listed as critical were now in a stable condition.

Another injured spectator was being treated at Florida Hospital Memorial Medical Center in Daytona Beach, but their condition was not available.

Fourteen other fans had been treated on site at the track before being released, said Daytona International Speedway president Joei Chitwood.

Chitwood said any fans in the affected area who were concerned about the safety of their seat position would be relocated.

"If fans are unhappy with...their seating location or if they have any incidents, we would relocate them. We will treat that area like we do every other of the grandstand.

"If a fan is not comfortable where they are sitting, we make every accommodation we can," he said.

NASCAR and the speedway could face millions of dollars' worth of claims from the injured, litigation that would likely center on the sturdiness of the safety fence that was supposed to keep fans from danger, according to several plaintiffs' lawyers.

"Maybe the fence should have been higher; maybe there should have been more spacing between the track and spectators," said Adam Levitt, a lawyer with Grant & Eisenhofer.

However, lawyers also said the auto-racing business would likely point to the disclaimers that it typically displays on tickets, which are designed to exempt NASCAR from any potential injury liability. They expected NASCAR would argue that fans knew what they were getting into when signing up for the race.

NEW FENCING

Both the speedway and NASCAR have said they will closely review the incident in search of any ways they could improve safety.

Chitwood said new, 22-feet-high fencing had been put in place three years ago following a review of a crash involving Colin Edwards at Talladega in 2009.

"If you look at our 55 years in the business, we have a pretty good safety track record. I think we are prepared today," said Chitwood.

However, three-times Indianapolis 500 winner Johnny Rutherford said a change might be needed.

"Maybe a double fence, one behind the other with some space in between to stop something like this," he told reporters.

"But there are a lot of things and NASCAR and Indy Car racing are looking at everything they can to make it safer.

"What happened yesterday was a terrible thing because we expect (danger) that is part of it, we have to roll the dice and move on but you don't want to involve the fans," he said.

NASCAR's senior vice-president of racing operations Steve O'Donnell said he would tell any nervous fans that organisers were confident of their safety.

"I would tell them that the fans are our first priority. Obviously we want everyone to be safe at an event," he told reporters.

"We've talked to the speedway. We are confident in what's in place at today's event. Certainly still thinking about those affected but we are confident to move forward for this race," he added.

Fans streamed into the 167,000-capacity venue on Sunday and there was little indication of concern over safety.

"I feel safe. I think anywhere you go you run the risk of being injured but NASCAR does everything they can to protect the fans. They treat the fans like royalty here, it is amazing," said Vinny Nigro of New York City.

Another fan, Brad Stefka from Springfield, Missouri, said that while not particularly worried he would avoid the seating closest to the track.

"I just won't get down low. I would imagine that everyone who comes knows there is some element of danger if the cars are going that fast, if there is going to be a serious impact," he said.



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Gloomy Italians vote in election crucial for euro zone


ROME (Reuters) - Italy voted on Sunday in one of the most unpredictable elections in years, with many voters expressing rage against a discredited elite and doubt that a government will emerge strong enough to combat a severe economic crisis.


"I am pessimistic. Nothing will change," said Luciana Li Mandri, 37, as she cast a ballot in the Sicilian capital Palermo on the first of two days of voting that continues on Monday.


"The usual thieves will be in government."


Her gloom reflected the mood across Italy, where many voters said they thought the new administration would not last long, just the opposite of what Italy needs to combat the longest slump in 20 years, mounting unemployment and a huge public debt.


The election is being closely watched by investors whose memories are fresh of a debt crisis which forced out scandal-plagued conservative premier Silvio Berlusconi 15 months ago and saw him replaced by economics professor Mario Monti.


"I'm not confident that the government that emerges from the election will be able to solve any of our problems," said Attilio Bianchetti, a 55-year-old building tradesman in Milan.


Underlining his disilluion with the established parties, he voted for the 5-Star Movement of comic Beppe Grillo.


An iconclastic, 64-year-old Genoese, Grillo has screamed himself hoarse with obscenity-laced attacks on politicians that have channeled the anger of Italians, especially a frustrated young generation hit by record unemployment.


"He's the only real new element in a political landscape where we've been seeing the same faces for too long," said Vincenzo Cannizzaro, 48, in Palermo.


Opinion polls give the centre-left coalition of Pier Luigi Bersani a narrow lead but the result has been thrown open by the prospect of a huge protest vote against Monti's painful austerity measures and rage at a wave of corruption scandals.


A weak government could usher in new instability in the euro zone's third largest economy and cause another crisis of confidence in the European Union's single currency.


Television tycoon Berlusconi, showing off unrivalled media skills and displaying extraordinary energy for a man of 76, has increased uncertainty over the past couple of months by halving the gap between his centre-right and Bersani.


"I am pessimistic. There is such political fragmentation that we will again have the problem of ungovernability" said Marta, a lawyer voting in Rome who did not want to give her family name. "I fear the new government won't last long."


Another Roman voter, lab technician Manila Luce, 34, said: "I am voting Grillo and I hope a lot of people do. Because it's the only way to show how sick to the back teeth we are with the old parties."


Voting continues until 10 p.m. (4 p.m. EST) and resumes on Monday at 7 a.m. Exit polls will be published shortly after polls close at 3 p.m. on Monday. Full official results are expected by early Tuesday.


Snow in the north was expected to last into Monday and could discourage some of the 47 million eligible voters. Authorities said they were prepared for the weather and in the central city of Bologna roads were cleared of snow before voting started.


TOPLESS FEMINISTS


Several bare-breasted women protested against Berlusconi when he voted in Milan. They were bundled away by police.


The four-time premier, known for off-color jokes and a constant target of feminists, is on trial for having sex with an underage prostitute during "bunga bunga" parties at his villa.


Most experts expect a coalition between Bersani and Monti to form the next administration, but whatever government emerges will have to try to reverse years of failure to revitalize one of the most sluggish economies in the developed world.


The widespread despair over the state of the country, where a series of corruption scandals has highlighted the stark divide between a privileged political elite and millions of ordinary Italians struggling to make ends meet, has left deep scars.


"It's our fault, Italian citizens. It's our closed mentality. We're just not Europeans," said voter Li Mandri in Palermo.


"We're all about getting favors when we study, getting a protected job when we work," she said. "That's the way we are and we can only be represented by people like that as well."


ECONOMIC AGENDA


Even if Bersani wins as expected, Analysts are divided over whether he will be able to form a stable majority that can force through sweeping economic reforms.


His centre-left is expected to have firm control of the lower house, thanks to rules that give a strong majority to whichever party wins the most votes nationally.


But a much closer battle will be fought for the Senate which is elected on a regional basis and which has equal law making powers to the chamber.


Berlusconi has clawed back support by promising to repeal Monti's hated new housing tax, the IMU, and to refund the money. He relentlessly attacked what he called the "Germano-centric" policies of the former European Union commissioner.


Think-tank consultant Mario, 60, said on his way to vote in Bologna that Bersani's Democratic Party was the only group serious enough to repair the economy: "They're not perfect," he said. "But they've got the organization and the union backing that will help them push through structural reforms."


Despite Berlusconi's success, Grillo has tapped into the same public frustration as the conservative tycoon and pollsters say his 5-Star Movement of political novices could overtake the centre-right to take second place in the vote.


Rivals have branded Grillo a threat to democracy - a vivid image in a country ruled by fascists for two decades until World War Two. Several voters who spoke to Reuters said Grillo was not the answer because of his lack of concrete policies and the inexperience of those who will sit in parliament for 5-Star.


"Grillo is a populist and populism doesn't work in a democracy," said retired notary Pasquale Lebanon, 76, as he voted for Bersani's Democratic Party in Milan.


"I'm very worried. There seems to be no way out from a political point of view, or for being able to govern," said Calogero Giallanza, a 45-year-old musician in Rome as he also voted for Bersani.


"There's bound to be a mess in the Senate because, as far as I can see the 5-Star Movement is unstoppable."


(Additional reporting by Cristiano Corvino, Lisa Jucca, Jennifer Clark, Matthias Baehr, Jennifer Clark and Sara Rossi in Milan, Stephen Jewkes in Bologna, Wladimir Pantaleone in Palermo, Stefano Bernabei and Massimiliano Di Giorgio in Rome; Writing by James Mackenzie and Barry Moody; Editing by Alastair Macdonald)



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Jeter resumes on-field running drills in Tampa


TAMPA, Fla. (AP) — Yankees captain Derek Jeter has practiced on-field running and agility drills for the first time since breaking his ankle last fall.


Jeter worked out at Steinbrenner Field on Saturday with players that didn't travel for the Yankees' spring training opener against Atlanta.


The 38-year-old broke his left ankle lunging for a grounder in the AL championship series opener against Detroit on Oct. 1 and had surgery a week later. He expects to be ready for opening day against Boston on April 1.


Jeter had a resurgent season in 2012, leading the American League with 216 hits and batting .316 with 15 homers and 58 RBIs. He first injured his ankle in mid-September and fouled balls off his foot several times after that.


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1st Google+ ‘Hangout’ in Space Connects Astronauts with Earth






Thousands of space fans young and old got a taste of what life in space is like Friday (Feb. 22) during NASA‘s first-ever Google+ Hangout with astronauts on the International Space Station.


The live online video conference connected three members of the space station‘s crew with chat participants from around the world and came just days after the $ 100 billion space laboratory briefly lost communications with NASA Mission Control.






The space station is a robust, tough space ship,” Canadian Space Agency astronaut Chris Hadfield said when asked about the communications malfunction. “We worked together as a crew following the procedures as we’re trained to do. After just a couple orbits, we had the computers talking to the antennas properly so we could talk to the ground. We were working together as a team.”


Expedition 34 commander Kevin Ford and flight engineer Tom Marshburn, both of NASA, joined Hadfield in answering questions from their online audience, which peppered the crew with questions via Twitter, Google+ and YouTube. The questions ranged from what books the astronauts read to how a cat might deal with life in zero gravity. [Take a video tour inside the space station]


Two students from Union High School in Iowa asked the astronauts to explain why space agencies around the world have people living in space.


“The whole point of having a space station is to have some place in space where people can take their ideas,” Ford responded. “We have a huge power supply up here. We have a lot of rack space, and we have a lot of scientists on the ground with a lot of ideas of things to do in space.”


Other questions focused on the health of the astronauts.


Space station astronauts are expected to monitor their health very closely to see how the body changes when exposed to microgravity. Hadfield was in the middle of one of those health experiments today.


Marshburn — a medical doctor — explained that two non-invasive temperature probes attached to Hadfield’s head and chest allow the scientists see how his natural body cycles have changed since being in orbit.


Because the space station experiences 16 sunsets and as many sunrises in any given day, the circadian rhythms of station astronauts tend to change a great deal while in orbit, the astronauts said. Hadfield’s temperature-monitoring probe will help doctors keep track of just how much those change.


The space station residents have contingency plans for medical emergencies too.


A group of students from the Neil Armstrong Institute in Monterrey, Mexico asked the spaceflyers what would happen if one of their colleagues fell ill while in space.


Marshburn explained that there are always two medical officers as part of the six person crew. The designated residents are trained to perform medical procedures that will stabilize the injured spaceflyer until he or she can be sent back to Earth using the Russian Soyuz capsule that brought them to the station. 


The question and answer session with the space station lasted about 20 minutes, but NASA astronauts on the ground Nicole Stott and Ron Garan fielded questions from the audience for the other 40 minutes.


Hadfield, Ford and Marshburn make up half of the Expedition 34 crew currently living on the International Space Station. Three Russian cosmonauts round out the crew.


The International Space Station is the largest structure ever built in space. It is the size of a football field and was constructed by 15 different countries working under five space agencies representing the United States, Russia, Europe, Canada and Japan.


Construction of the space station began in 1998 and it has been continuously staffed by international astronaut crews working on a rotating mission schedule since 2000.


NASA also provides live video from the International Space Station via Ustream, as well as live audio from the space station.


Follow Miriam Kramer on Twitter @mirikramer or SPACE.com @Spacedotcom. We’re also on Facebook & Google+


Copyright 2013 SPACE.com, a TechMediaNetwork company. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.
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Analysis: Italian election explained











Austerity-hit Italy chooses new leader


Austerity-hit Italy chooses new leader


Austerity-hit Italy chooses new leader


Austerity-hit Italy chooses new leader








STORY HIGHLIGHTS


  • Silvio Berlusconi is campaigning to win his old job back for the fourth time

  • The eurozone's third largest economy is hurting, with unemployment surpassing 11%

  • Pier Luigi Bersani of the center-left Democratic Party is expected to narrowly win

  • Italy's political system encourages the forming of alliances




(CNN) -- Little more than a year after he resigned in disgrace as prime minister, Silvio Berlusconi is campaigning to win his old job back -- for the fourth time.


Berlusconi, the septuagenarian playboy billionaire nicknamed "Il Cavaliere," has been trailing in polls behind his center-left rival, Per Luigi Bersani.


But the controversial media tycoon's rise in the polls in recent weeks, combined with widespread public disillusionment and the quirks of Italy's complex electoral system, means that nothing about the race is a foregone conclusion.


Why have the elections been called now?


Italian parliamentarians are elected for five-year terms, with the current one due to end in April. However in December, Berlusconi's People of Freedom Party (PdL) withdrew its support from the reformist government led by Mario Monti, saying it was pursuing policies that "were too German-centric." Monti subsequently resigned and the parliament was dissolved.






Berlusconi -- the country's longest serving post-war leader -- had resigned the prime ministerial office himself amidst a parliamentary revolt in November 2011. He left at a time of personal and national crisis, as Italy grappled with sovereign debt problems and Berlusconi faced criminal charges of tax fraud, for which he was subsequently convicted. He remains free pending an appeal. He was also embroiled in a scandal involving a young nightclub dancer - which led him to be charged with paying for sex with an underage prostitute.


MORE: From Venice to bunga bunga: Italy in coma


He was replaced by Monti, a respected economist and former European Commissioner, who was invited by Italy's President Giorgio Napolitano to lead a cabinet of unelected technocrats. Monti's government implemented a program of tax rises and austerity measures in an attempt to resolve Italy's economic crisis.


Who are the candidates?


The election is a four-horse race between political coalitions led by Bersani, Berlusconi, Monti, and the anti-establishment movement led by ex-comedian Beppe Grillo. Polls are banned within two weeks of election day, but the most recent ones had Bersani holding onto a slender lead over Berlusconi, followed by Grillo in distant third.


READ MORE: Will Monte Paschi banking scandal throw open Italy's election race?


The center-left alliance is dominated by the Democratic Party, led by Bersani. He is a former Minister of Economic Development in Romano Prodi's government from 2006-8 -- and has held a comfortable lead in polls, but that appears to be gradually being eroded by Berlusconi.


Italy's political system encourages the forming of alliances, and the Democratic Party has teamed with the more left-wing Left Ecology Freedom party.


The 61-year-old Bersani comes across as "bluff and homespun, and that's part of his appeal -- or not, depending on your point of view," said political analyst James Walston, department chair of international relations at the American University of Rome.


He described Bersani, a former communist, as a "revised apparatchik," saying the reform-minded socialist was paradoxically "far more of a free marketeer than even people on the right."


Bersani has vowed to continue with Monti's austerity measures and reforms, albeit with some adjustments, if he wins.


At second place in the polls is the center-right alliance led by Berlusconi's PdL, in coalition with the right-wing, anti-immigration Northern League.


Berlusconi has given conflicting signals as to whether he is running for the premiership, indicating that he would seek the job if his coalition won, but contradicting that on other occasions.


In a recent speech, he proposed himself as Economy and Industry Minister, and the PdL Secretary Angelino Alfano as prime minister.


Roberto Maroni, leader of the Northern League, has said the possibility of Berlusconi becoming prime minister is explicitly ruled out by the electoral pact between the parties, but the former premier has repeatedly said he plays to win, and observers believe he is unlikely to pass up the chance to lead the country again if the opportunity presents itself.


Berlusconi has been campaigning as a Milan court weighs his appeal against a tax fraud conviction, for which he was sentenced to four years in jail last year. The verdict will be delivered after the elections; however, under the Italian legal system, he is entitled to a further appeal in a higher court. Because the case dates to July 2006, the statute of limitations will expire this year, meaning there is a good chance none of the defendants will serve any prison time.


He is also facing charges in the prostitution case (and that he tried to pull strings to get her out of jail when she was accused of theft) -- and in a third case stands accused of revealing confidential court information relating to an investigation into a bank scandal in 2005.


Despite all this, he retains strong political support from his base.


"Italy is a very forgiving society, it's partly to do with Roman Catholicism," said Walston. "There's sort of a 'live and let live' idea."


Monti, the country's 69-year-old technocrat prime minister, who had never been a politician before he was appointed to lead the government, has entered the fray to lead a centrist coalition committed to continuing his reforms. The alliance includes Monti's Civic Choice for Monti, the Christian Democrats and a smaller centre-right party, Future and Freedom for Italy.


As a "senator for life," Monti is guaranteed a seat in the senate and does not need to run for election himself, but he is hitting the hustings on behalf of his party.


In a climate of widespread public disillusionment with politics, comedian and blogger Beppe Grillo is also making gains by capturing the protest vote with his Five Star Movement. Grillo has railed against big business and the corruption of Italy's political establishment, and holds broadly euro-skeptical and pro-environmental positions.


How will the election be conducted?


Italy has a bicameral legislature and a voting system which even many Italians say they find confusing.


Voters will be electing 315 members of the Senate, and 630 members of the Chamber of Deputies. Both houses hold the same powers, although the Senate is referred to as the upper house.


Under the country's closed-list proportional representation system, each party submits ranked lists of its candidates, and is awarded seats according to the proportion of votes won -- provided it passes a minimum threshold of support.


Seats in the Chamber of Deputies are on a national basis, while seats in the senate are allocated on a regional one.


The party with the most votes are awarded a premium of bonus seats to give them a working majority.


The prime minister needs the support of both houses to govern.


Who is likely to be the next prime minister?


On current polling, Bersani's bloc looks the likely victor in the Chamber of Deputies. But even if he maintains his lead in polls, he could fall short of winning the Senate, because of the rules distributing seats in that house on a regional basis.


Crucial to victory in the Senate is winning the region of Lombardy, the industrial powerhouse of the north of Italy which generates a fifth of the country's wealth and is a traditional support base for Berlusconi. Often compared to the U.S. state of Ohio for the "kingmaker" role it plays in elections, Lombardy has more Senate seats than any other region.


If no bloc succeeds in controlling both houses, the horse-trading begins in search of a broader coalition.


Walston said that a coalition government between the blocs led by Bersani and Monti seemed "almost inevitable," barring something "peculiar" happening in the final stages of the election campaign.


Berlusconi, he predicted, would "get enough votes to cause trouble."


What are the main issues?


There's only really one issue on the agenda at this election.


The eurozone's third largest economy is hurting, with unemployment surpassing 11% -- and hitting 37% for young people.


Voters are weighing the question of whether to continue taking Monti's bitter medicine of higher taxation and austerity measures, while a contentious property tax is also proving a subject of vexed debate.


Walston said the dilemma facing Italians was deciding between "who's going to look after the country better, or who's going to look after my pocket better."


He said it appeared voters held far greater confidence in the ability of Monti and Bersani to fix the economy, while those swayed by appeals to their own finances may be more likely to support Berlusconi.


But he said it appeared that few undecided voters had any faith in Berlusconi's ability to follow through on his pledges, including a recent promise to reverse the property tax.


What are the ramifications of the election for Europe and the wider world?


Improving the fortunes of the world's eighth largest economy is in the interests of Europe, and in turn the global economy.


Italy's woes have alarmed foreign investors. However, financial commentator Nicholas Spiro, managing director of consultancy Spiro Sovereign Strategy, says the European Central Bank's bond-buying program has gone a long way to mitigating investors' concerns about the instability of Italian politics.


Why is political instability so endemic to Italy?


Italy has had more than 60 governments since World War II -- in large part as a by-product of a system designed to prevent the rise of another dictator.


Parties can be formed and make their way on to the political main stage with relative ease -- as witnessed by the rise of Grillo's Five Star Movement, the protest party which was formed in 2009 but in local and regional elections has even outshone Berlusoni's party at times.


Others point to enduringly strong regional identities as part of the recipe for the country's political fluidity.


READ MORE: Italian Elections 2013: Fame di sapere (hunger for knowledge)







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Charges filed in slaying of Clemente High School student









Authorities filed charges against a 34-year-old man in connection with the shooting death of an 18-year-old Clemente High School student killed on the West Side last week.


Larry Luellen Jr., 34, was charged with first degree murder in the death of Frances Colon. Luellen is due in court today.


Luellen lives in the 3900 block of West Division Street in West Humboldt Park, around the corner from where Colon was shot. Police don't believe she was the target.





Colon is the third student at Roberto Clemente to be killed this school year, according to the school's principal Marcey Sorensen.


Rey Dorantes, 14, of the 2400 block of West Augusta Boulevard, was shot and killed on Jan. 11. His death came about a month after another Clemente student, 16-year-old Jeffrey Stewart, of the 5200 block of West Race Avenue, was shot and killed on Dec. 9.


Colon was a senior who was preparing to attend college. Hours before the shooting, she had watched President Barack Obama speak at Hyde Park Academy on the South Side about gun violence, according to her father.


Check back for more information.


pnickeas@tribune.com
Twitter: @peternickeas





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Iran announces uranium finds, days before nuclear talks


DUBAI (Reuters) - Days before resuming talks over its disputed atomic program, Iran said on Saturday it had found significant new deposits of raw uranium and identified sites for 16 more nuclear power stations.


State news agency IRNA quoted a report by the Atomic Energy Organisation of Iran (AEOI) which said the reserves were discovered in northern and southern coastal areas and had trebled the amount outlined in previous estimates.


There was no independent confirmation. With few uranium mines of its own, Western experts had previously thought that Iran might be close to exhausting its supply of raw uranium.


"We have discovered new sources of uranium in the country and we will put them to use in the near future," Fereydoun Abbasi-Davani, head of the AEOI, was quoted as saying at Iran's annual nuclear industry conference.


The timing of the announcement suggested Iran, by talking up its reserves and nuclear ambitions, may hope to strengthen its negotiating hand at talks in Kazakhstan on Tuesday with the United States, Russia, China, Britain, France and Germany.


Diplomats say the six powers, known as the P5+1, are set to offer Iran some relief from international sanctions if it agrees to curb its production of higher-grade enriched uranium.


The West says Iran's enrichment of uranium to a fissile purity of 20 percent demonstrates its intent to develop a nuclear weapons capability, an allegation the Islamic republic denies.


FROM MINE TO CENTRIFUGE


The enriched uranium required for use in nuclear reactors or weapons is produced in centrifuges that spin uranium hexafluoride gas (UF6) at high speeds. The UF6 is derived from yellow cake, a concentrate from uranium ore discovered in mines.


Iran's reserves of raw uranium now stood at around 4,400 tonnes, taking into account discoveries over the past 18 months, IRNA quoted the report as saying.


In another sign that Iran is intent on pushing forward with its nuclear ambitions, the report also said 16 sites had been identified for the construction of nuclear power stations.


It did not specify the exact locations but said they included coastal areas of the Gulf, Sea of Oman, Khuzestan province and the Caspian Sea.


Iranian authorities have long announced their desire to build more nuclear power plants for electricity production. Only one currently exists, in the southern city of Bushehr, and that has suffered several shutdowns in recent months.


The announcements could further complicate the search for a breakthrough in Kazakhstan, after three unsuccessful rounds of talks between the two sides in 2012.


"We are meeting all of our obligations under the nuclear Non-Proliferation Treaty and we should be able to benefit from our rights. We don't accept more responsibilities and less rights," Saeed Jalili, Iran's chief nuclear negotiator, was quoted as telling Saturday's conference.


In what Washington has called a provocative move, Iran is also installing new-generation centrifuges, capable of producing enriched uranium much faster, at a site in Natanz in the centre of the country.


Western diplomats say the P5+1 will reiterate demands for the suspension of uranium enrichment to a purity of 20 percent, the closure of Iran's Fordow enrichment plant, increased access for International Atomic Energy Agency inspectors and agreement to address concerns on existing uranium stockpiles.


In return, the latest embargoes on gold and metals trading with Iran would be lifted. Iran has criticized the offer and says its rights need to be fully recognized.


"If the P5+1 group wants to start constructive talks with Tehran it needs to present a valid proposal," said Jalili. "It needs to put its past errors to one side ... to win the trust of the Iranian nation."


In a statement issued before the Iranian announcement, German Foreign Minister Guido Westerwelle said the six-power group wanted to enter a 'substantial negotiation process' over Tehran's nuclear program.


"The talks in Almaty are a chance which I hope Iran takes," he said.


(Additional reporting by Alexandra Hudson in Berlin; Editing by Mark Trevelyan)



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Wall Street rises on HP but S&P on track to end week lower

NEW YORK (Reuters) - Stocks rebounded on Friday as Hewlett-Packard, the largest personal computer maker, surged on strong results, but the S&P 500 index was on the way to end a streak of gains that has lasted seven straight weeks.


The S&P shed 1.9 percent over the previous two sessions, its worst two-day drop since early November, putting the index on pace for its first weekly decline of the year. The retreat was triggered when the Federal Reserve's meeting minutes for January suggested stimulus measures may be halted sooner than thought.


Still, the index is up nearly 6 percent for the year and held the 1,500 support level despite the recent declines, a sign of a positive bias in the market.


"The market is addicted to Fed stimulus and gets withdrawal shakes every time that's threatened, but now we're resuming our course and remain much more attractively valued than other asset classes," said Rex Macey, chief investment officer at Wilmington Trust in Atlanta, Georgia.


Hewlett-Packard Co jumped 9.6 percent to $18.74 as the top boost on both the Dow and S&P 500 after the PC maker's quarterly revenue and forecasts beat expectations. The company cut costs under Chief Executive Meg Whitman's turnaround plan. The S&P technology sector <.splrct> was up 0.6 percent.


The Dow Jones industrial average <.dji> was up 52.22 points, or 0.38 percent, at 13,932.84. The Standard & Poor's 500 Index <.spx> was up 5.25 points, or 0.35 percent, at 1,507.67. The Nasdaq Composite Index <.ixic> was up 13.45 points, or 0.43 percent, at 3,144.94.


For the week, the Dow is off 0.3 percent in its third straight week of slight losses, the S&P is off 0.7 percent and the Nasdaq is off 1.4 percent.


Also buoying tech stocks were gains in semiconductor companies after Marvell Technology Group Ltd forecast results this quarter that were largely above analysts' expectations as it gained market share in the hard-disk drive and flash-storage businesses.


In addition, Texas Instruments Inc raised its dividend by a third and boosted its stock buyback program. Texas Instruments rose 4.3 percent at $33.88 while Marvell added 2.2 percent at $9.67. The PHLX semiconductor index <.sox> gained 1.3 percent.


"Dividends growing are another way the market's level is justified, if not especially attractive at these levels," said Macey, who manages about $20 billion in assets.


On the downside, Abercrombie & Fitch dropped 7.3 percent to $45.49 after the clothing retailer reported a drop in fourth-quarter comparable sales, even as its latest quarterly earnings topped estimates.


Insurer American International Group Inc posted fourth-quarter results that beat analysts' expectations. Shares advanced 2.6 percent to $38.26.


According to Thomson Reuters data through Friday morning, of 439 companies in the S&P 500 that have reported results, 70 percent have exceeded analysts' expectations, compared with a 62 percent average since 1994 and 65 percent over the past four quarters.


Fourth-quarter earnings for S&P 500 companies are estimated to have risen 6 percent, according to the data, above a 1.9 percent forecast at the start of the earnings season.


(Editing by Kenneth Barry)



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Pistorius granted bail pending murder trial


PRETORIA, South Africa (AP) — A South African magistrate allowed Oscar Pistorius to go free on bail Friday, capping hearings that foreshadow a dramatic trial in the Valentine's Day killing of the star athlete's girlfriend.


Pistorius' family members and supporters shouted "Yes!" when Chief Magistrate Desmond Nair made his decision after a more than 1 hour and 45 minute explanation of his ruling to a packed courtroom.


Radio stations and a TV news network in South Africa broadcast the audio of the decision live, and even international channels like the BBC and CNN went live with it, underscoring the huge global interest in the case.


Nair set the bail at 1 million rand ($113,000), with $11,300 in cash up front and proof that the rest is available. The magistrate said Pistorius must hand over his passports and also turn in any other guns that he owns. Pistorius also cannot leave the district of Pretoria, South Africa's capital, without the permission of his probation officer, Nair said, nor can he take drugs or drink alcohol.


The double-amputee Olympian's next court appearance was set for June 4. He left the courthouse in a silver Land Rover, sitting in the rear, just over an hour after the magistrate imposed the bail conditions. The vehicle, tailed by a motorcycle with a TV cameraman aboard, later pulled into the home of Pistorius' uncle.


The magistrate ruled that Pistorius could not return to his upscale home in a gated community in the eastern suburbs of Pretoria, where the killing of Reeva Steenkamp took place.


Pistorius' uncle, Arnold Pistorius said: "We are relieved at the fact that Oscar got bail today but at the same time we are in mourning for the death of Reeva with her family. As a family, we know Oscar's version of what happened on that tragic night and we know that that is the truth and that will prevail in the coming court case."


Nair made the ruling after four days of arguments from prosecution and defense in Pistorius' bail hearing. During Friday's long session in Pretoria Magistrate's Court, Pistorius alternately wept and appeared solemn and more composed, especially toward the end as Nair criticized police procedures in the case and as a judgment in Pistorius' favor appeared imminent.


Nair had banned cameras from Friday's dramatic bail hearing and complained about cameras constantly "flashing" in Pistorius' face the previous three days of hearings, saying the spectacle made the athlete look like "some kind of species the world has never seen before."


Nair said Pistorius' sworn statement, in which he gave his version of the events of the shooting during the predawn hours of Feb. 14 in a sworn statement, had helped his application for bail.


"I come to the conclusion that the accused has made a case to be released on bail," Nair said.


Pistorius said in the sworn statement that he shot his girlfriend — a model and budding reality TV contestant — accidentally, believing she was an intruder in his house.


Prosecutors say he intended to kill Steenkamp and charged him with premeditated murder, saying the shooting followed a loud argument between the two.


Sharon Steenkamp, Reeva's cousin, had said earlier that the family wouldn't be watching the bail decision and hadn't been following the hearing in Pretoria.


"It doesn't make any difference to the fact that we are without Reeva," she told The Associated Press.


Despite the bail decision, prosecution spokesman Medupe Simasiku said: "We're still confident in our case," outside court.


Pistorius faced the sternest bail requirements in South Africa because of the seriousness of the charge, and his defense lawyers had to prove that he would not flee the country, would not interfere with witnesses or the case, and his release would not cause public unrest.


Nair questioned whether Pistorius would be a flight risk and be prepared to go "ducking and diving" around the world when he stood to lose a fortune in cash, cars, property and other assets. Nair also said that while it had been shown that Pistorius had aggressive tendencies, he did not have a prior record of offenses for violent acts.


He criticized Hilton Botha, the previous lead investigator in the case, for not doing more to uncover evidence that the Olympian had violent tendencies.


"There is ample room and ample time to do that by looking at the background of the accused," he said.


But while Nair leveled harsh criticism at former lead investigator Botha for "errors" and "blunders," he said one man does not represent the state's case and that the state could not be expected to put all the pieces of its puzzle together in such a short time.


Anticipating the shape of the state's case at trial, he said he had serious questions about Pistorius' account: Why he didn't try to locate his girlfriend on fearing an intruder was in the house, why he didn't try to determine who was in the toilet and why he would venture into perceived "danger" - the bathroom area - when he could have taken other steps to ensure his safety.


"There are improbabilities which need to be explored," Nair said, adding that Pistorius could clarify these matters by testifying under oath at trial.


___


AP Sports Writer Gerald Imray and AP writer Carley Petesch contributed to this report from Johannesburg.


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