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Science Forum Index » Astro - Amateur Forum » Need An Actual Astronomer To Answer Your Questions ?
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| Ask The Astronomer |
 Posted: Sat Feb 10, 2007 12:24 pm |
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Greetings From The Astronomer !
I'm here to help you understand our amazing space !
Have age old questions about everything space and astronomy?
Need help figuring out your astronomy homework ?
Well your answers are here . What better way to find out about our
amazing universe than from an astronomer. Here I have posted questions
I've recieved & the answers to them . Have fun reading them and
learn !
Learning about space & Astronomy is just as amazing and fun when your
looking at the great night sky ! When you learn you earn!
Look thru the answered questions on the left or scroll down for all
questions .
Send your questions to: asktheastronomer@gmail.com
If your asking a question PLEASE EMAIL your question . If you put it
here , I can't answer it because it doesn't include your email .
My website is :
http://www.asktheastronomer.blogspot.com |
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| Brian Tung |
| Posted: Sat Feb 10, 2007 12:24 pm |
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Ask The Astronomer wrote:
Interesting! Incidentally, for your question "How is Saturn's gravity
different from the Earth's?" it might be provocative to point out that
for all Saturn's increased mass, its "surface" gravity is very nearly
the same as the Earth's, since its width is about 9.5 times that of the
Earth, while its mass is 95 times that of the Earth, which is just a bit
more than the square of 9.5.
Despite that, however, the escape velocity for Saturn (again, from the
cloudtop "surface") is much greater than it is for the Earth, because it
takes only a relatively small distance to get mostly out of the gravity
well of the Earth, whereas one must travel several times further to get
that far out of Saturn's gravity well.
--
Brian Tung <brian@isi.edu>
The Astronomy Corner at http://astro.isi.edu/
Unofficial C5+ Home Page at http://astro.isi.edu/c5plus/
The PleiadAtlas Home Page at http://astro.isi.edu/pleiadatlas/
My Own Personal FAQ (SAA) at http://astro.isi.edu/reference/faq.html |
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