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Old 11-20-2014, 12:16 AM   #13
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Join Date: Apr 2011
Location: Malaysia
Posts: 1,162
Default Re: """Asteroid"""

Originally Posted by HappyStikBeaver View Post
It is a comet, in the sense that it moves in an elongated ellipse around a star. Comets generally emit heavy dust or ice tails near their perihelion, or closest point to the sun. During the Philae landing, the comet was likely at a far distance from the sun, although I can't find a source that will confirm this. Regardless, the rock is a comet due to its irregular shape, high velocity, and independent, wide elliptical orbit around the sun. Also possible is that the comet is extinct or near-extinct. Comets which have passed the sun many times may have lost most of their volatile dust and ice, resulting in smaller tails, according to wikipedia. They state a dying comet may come to resemble an asteroid after a period of time. Other sources state the closing gap between the definition of a comet and asteroid. Hope this helped.
Hmm, I could agree on that. But there is still the mystery of the signal.
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