Archive - May 21, 2008

Original Source: Spaceflight Now

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PRINCETON, NJ -- When she peered into the screen of her computer one day in January, Alicia Soderberg was supposed to see a small, dull glowing smudge in one corner, the evidence of a month-old supernova that would help her better understand the mystery of these huge exploding stars. What the Princeton University astronomer saw instead was anything but dull. As Soderberg and Edo Berger, a postdoctoral research associate at Princeton, studied the X-ray emissions conveyed from space by NASA's Swift satellite, they saw an extremely bright light that seemed to jump out of the sky. They didn't know it, but they had just become the first astronomers to have caught a star in the act of exploding. The once-in-a-lifetime event, described in a paper published in the May 22 issue of Nature, has transfixed the worldwide astronomical community.

Soderberg and Berger wanted to observe a supernova known as SN 2007uy in the spiral galaxy NGC 2770, located 90 million light years from Earth in the constellation Lynx. They could plan to do that because they are able to view images captured by the telescope a few hours after the observation merely by downloading the data from the Swift website. The sudden appearance nearby of the X-ray burst of the newer supernova, easily captured by the NASA satellite with multiple instruments that can detect gamma rays, X-rays and ultraviolet light, has set scientists on a new path. "This phenomenon had been predicted more than 30 years ago, but is now observed for the first time," said Roger Chevalier, the W.H. Vanderbilt Professor of Astronomy at the University of Virginia. "These are the earliest observations of light from a supernova after the central collapse that initiated the explosion."

In the Nature paper, Soderberg and 38 colleagues show that the energy and pattern of the X-ray outburst is consistent with what scientists would have expected to see in the birth of a neutron star -- a shock wave blasting through the surface of the original massive star. Until now, astronomers have only been able to observe supernovae brightening days or weeks after the event, when the expanding shell of debris is energized by the decay of radioactive elements forged in the explosion.

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Photos Courtesy of AFP and NASA/Swift Science Team/Stefan Immler

Original Source: Washington Post

Original Source: Associated Press

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LOS ANGELES (AP) — After four consecutive male winners on "Dancing With the Stars," it was finally ladies' night. Kristi Yamaguchi was named the new "Dancing" champ on the show's season finale, becoming the first woman to win the ABC dance-off since its inaugural season. The figure skater came into the final contest Tuesday with a perfect score and bested fan favorites Jason Taylor and Cristian de la Fuente to claim the mirrorball trophy. "This is definitely for all those women out there to continue to be strong," she said after the show, hoisting the prize above her head.

The Olympic gold medalist was clearly the most talented dancer on this season's competition, regularly landing atop the judges' scoreboard. But viewer votes count just as much, and with the audience 75 percent female, men have had the edge. Last season ended with a shocker when race-car driver Helio Castroneves upset Spice Girl Melanie Brown.

Taylor, the massive but graceful pro football star, called Yamaguchi "just perfect," adding that he "grew up watching her compete for our country." De la Fuente, who was eliminated early in the two-hour season finale, said "it was impossible to beat her." His professional partner, Cheryl Burke, agreed. "Kristi deserved it more than any other woman in any other season," she said. "It's about time that a woman wins."

Winning the "Dancing" crown doesn't quite compare to winning an Olympic gold medal, Yamaguchi said, but it's still "a fun, amazing experience." "It's not just this (trophy) but what it represents," she said. "It's all the hard work and the time spent together and the friendships made, challenging yourself and learning something new."

Though Taylor and de la Fuente didn't win, each was victorious in his own way. Besides forming a close friendship with each other, Taylor, an aspiring actor, has taken meetings with Hollywood heavyweights, and de la Fuente learned an important life lesson. The actor ruptured a tendon in his biceps while dancing on April 28, but delayed the surgery necessary to repair it so he could continue in the contest.

"It's about wanting something in life and going for it," he said. "In this case it was a dance show, but it can be anything that you're afraid of. Go for it. Do it. The reward that you get when you put your heart, your soul, everything you've got in something, it's priceless."

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Photos Courtesy of ABC