Nearby Star May Be Getting Ready to Explode

June 12, 2009 by admin  
Filed under Planet

The nearby, well-known and very bright star may soon explode in a supernova, according to data released by U.C. Berkeley researchers Tuesday.

The red giant Betelgeuse, once so large it would reach out to Jupiter’s orbit if placed in our own solar system, has shrunk by 15 percent over the past decade in a half, although it’s just as bright as it’s ever been.

“To see this change is very striking,” said retired Berkeley physics professor Charles Townes, who won the 1964 Nobel Prize for inventing the laser. “We will be watching it carefully over the next few years to see if it will keep contracting or will go back up in size.”

Betelgeuse, whose name derives from Arabic, is easily visible in the constellation Orion. It gave Michael Keaton’s character his name in the movie “Beetlejuice” and was the home system of Galactic President Zaphod Beeblebrox in “The Hitchhiker’s Guide to the Galaxy.”

via Nearby Star May Be Getting Ready to Explode – Science News | Science & Technology | Technology News – FOXNews.com.

Hand of God Reaches Across Universe

April 6, 2009 by admin  
Filed under Planet

Tiny and dying but still-powerful stars called pulsars spin like crazy and light up their surroundings, often with ghostly glows.

So it is with PSR B1509-58, which long ago collapsed into a sphere just 12 miles in diameter after running out of fuel.

And what a strange scene this one has created.

In a new image from NASA’s Chandra X-ray Observatory, high-energy X-rays emanating from the nebula around PSR B1509-58 have been colored blue to reveal a structure resembling a hand reaching for some eternal red cosmic light.

The star now spins around at the dizzying pace of seven times every second — as pulsars do — spewing energy into space that creates the scene.

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