Friday, January 21, 2011

One Less Thing to Fear from the Skies!

Dying Star Betelgeuse Won't Explode in 2012, Experts Say
Published January 21, 2011

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Andrea Dupree (Harvard-Smithsonian CfA), Ronald Gilliland

The super-giant red star Betelgeuse in Orion’s nebula is predicted to cataclysmically explode, and the impending supernova may even reach Earth -- someday.
But will it happen by 2012, as recent news reports suggest? Probably not, experts say. While the second biggest star in the universe is strangely losing mass -- and has already become a red giant, meaning it is destined to explode and become a supernova -- there's no reason to believe that it will happen anytime soon.
Phil Plait, an astronomer who writes for Discovery News, agrees that someday, Betelgeuse will go gangbusters. But it’s way too far away to hurt us, he explained.
"A supernova has to be no farther than about 25 light years away to be able to fry us with light or anything else, and Betelgeuse is 25 times that distance," Plait wrote on his blog The Bad Astronomer.
The story was fueled by Australian news site News.com.au -- also owned by FoxNews.com parent company News Corp. -- which predicted that a giant explosion will occur, tens of millions of times brighter than the sun, and suggested the event was imminent. And the gist of the story is accurate: Betelgeuse will blow, in an explosion that will be visible from Earth, though it won't be so bright as to appear like a "second sun."
“This old star is running out of fuel in its center,” Carter told News.com.au. “This fuel keeps Betelgeuse shining and supported. When this fuel runs out the star will literally collapse in upon itself and it will do so very quickly.”
“It goes bang, it explodes, it lights up -- we’ll have incredible brightness for a brief period of time for a couple of weeks and then over the coming months it begins to fade and then eventually it will be very hard to see at all.”
That story is helping fuel Internet rumors and doomsday theories by confounding the impending supernova confirms with the Mayan calendar’s conclusion in 2012 -- which some believe is a prediction of the end of the world.
But there's no reason to think Betelgeuse will blow in 2012, Plait explains -- or even this millennium.
"It’s hard to know just when a star will explode when you’re on the outside. Betelgeuse might go up tonight, or it might not be for 100,000 years. We’re just not sure," Plait explained

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