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Politics : Formerly About Advanced Micro Devices -- Ignore unavailable to you. Want to Upgrade?


To: combjelly who wrote (345880)8/6/2007 3:13:40 PM
From: Taro  Read Replies (1) | Respond to of 1574711
 
LOL

Taro



To: combjelly who wrote (345880)8/6/2007 3:16:45 PM
From: longnshort  Respond to of 1574711
 
Article Preview
Pluto gives the Sun a warm goodbye

* 19 October 2002
* JH
* Magazine issue 2365

PLUTO is warming up as its orbit takes it further from the Sun. The finding is baffling astronomers, who had expected it to cool.

The planet moves in a 248-year elliptical orbit, and has been retreating from the Sun since its closest approach in 1989, when it was 4.4 billion kilometres out, just inside Neptune's orbit. It will reach its most distant point, 7.4 billion kilometres from the Sun, in 2114. Astronomers had worried that the atmosphere would freeze before NASA could send a spacecraft to explore the planet. But Pluto may be more complex than they thought. "We just don't know what is causing these effects," says Jim Elliot of MIT.

Pluto is so faint and so far away that the only way to probe its atmosphere from Earth is to wait for it to pass in front of a distant star and observe how the starlight is dimmed. ...