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mithridates
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This was a nice long article on what I (and many others of course) consider to be the most exciting part of space development at the moment:<br /><br />Link<br /><br /><blockquote><font class="small">In reply to:</font><hr /><p><br />Here's Looking at You, Universe<br /><br />By Joel Achenbach<br />Sunday, May 13, 2007; Page B01<br /><br />I dropped by NASA headquarters last Monday to hear about the relatively nearby and extremely massive star that might explode at any moment. Remember the name: Eta Carinae. Sounds like an Italian opera singer, or maybe a snazzy little sports car. It's a monster of a star -- something like 120 times the mass of the sun, and roiling, heaving, spewing out gobs of star stuff in what may be the prelude to a cataclysmic bang, a supernova unlike any seen before.<br /><br />If it blows, you might be able to read a book by its radiance at night -- unless it fires a narrow beam of gamma rays right at us, in which case all bets are off. One astrophysicist on hand said, "It would probably destroy all the ozone in the atmosphere." Similar to what we tried to do ourselves, before we banned those nasty chlorofluorocarbons. Eta Carinae would be like a giant can of 1950s hairspray. Not a pleasant picture.<br /><br />This new look at our friendly neighborhood Death Star follows the observation, last September, of a much more distant supernova, which scientists have given the lovely name of SN 2006gy. This was a gargantuan star much like Eta Carinae. The orthodoxy had been that "Eta Car" would have to go through a gradual process of shedding its "hydrogen envelope" before it would explode. But SN 2006gy didn't bother with that. And while most stars that explode leave behind a solid core of material, this star annihilated itself. Nothing left but fireworks.<br /><br />The bulletins from space arrive almost daily. More than 200 "extrasolar"</p></blockquote> <div class="Discussion_UserSignature"> <p>----- </p><p>http://mithridates.blogspot.com</p> </div>