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Originally posted by Ophiuchus 13
reply to post by mnemeth1
The one on top because it looks to be of a more frozen composition..
2nd
Comets are distinguished from asteroids by the presence of a coma or a tail. However, extinct comets that have passed close to the Sun many times have lost nearly all of their volatile ices and dust and may come to resemble small asteroids
Originally posted by davespanners
Your not really arguing with anyone here.
Even wikipedia agrees with you
Comets are distinguished from asteroids by the presence of a coma or a tail. However, extinct comets that have passed close to the Sun many times have lost nearly all of their volatile ices and dust and may come to resemble small asteroids
wiki
Originally posted by davespanners
reply to post by mnemeth1
But doesn't that only happen when it's passing close to a heat source?
I don't really know what I expected a comet to look like, I never really assumed it would look like some kind of winter wonderland Christmas card covered with snow so I guess I didn't get the point of the OP
I don't know
I am backed up on my cometology studies
Originally posted by davespanners
How was the conclusion that comets were made of rocks and ice come to in the first place?
Is This Nasa page about actual samples being taken from comets not true?
Originally posted by mnemeth1
[atsimg]http://files.abovetopsecret.com/images/member/092d95e90a31.jpg[/atsimg]
[atsimg]http://files.abovetopsecret.com/images/member/f3c9bf9243bd.jpg[/atsimg]
The repulsion of a comet’s tail by the sun. The head of a comet and its tail are charged under a great potential difference, accounting for the manifest repulsion of the tail and attraction of the head.