is it because it has an orbit or a moon? im just wundering what justification there is for deplanetizing jupiter. i bet you would call it a planet if you lived there.
2006-09-29 17:45:12 · 8 answers · asked by hondacobra 2 in Science & Mathematics ➔ Astronomy & Space
Comets travel on long parabolic orbits; Earth's orbit is nearly circular. Asteroids are airless, Earth has an atmosphere. Asteroids hang out in the asteroid belt, mostly beyond Mars. Earth stays in its own part of the solar system. There are probably other reasons, but these are the ones that occur to me off the top of my head.
2006-09-29 17:51:03 · answer #1 · answered by cdf-rom 7 · 0⤊ 0⤋
Because the guys who claim the right to define the word "planet" say so. Some folks think that Ceres should be a planet, since one objective definition of the word would be a world that is big enough for it's gravity to have shaped it into a sphere.
And, as far as I know, nobody has said that Jupiter isn't a planet. It's a little small to be a Brown Dwarf star.
2006-09-30 15:52:06 · answer #2 · answered by Nomadd 7 · 0⤊ 0⤋
Yes, the orbits arount the sun and the moon orbits around the earth. Comets actually orbit around the earth , in a long oval shape, so most of the time, you wont see comets. Astroids are like comets, only there not in orbit aroun a planet. there in the astroid belt.
2006-09-30 03:39:57 · answer #3 · answered by Cool_dude 3 · 0⤊ 0⤋
earth is a planet because it is pulled by gravitational pull of the sun causeing the earth to orbit around it . But it is also called a planet because it has and object ( moon) orbiting around it comets and asteriods don't have other things orbiting around them.
2006-09-30 01:38:43 · answer #4 · answered by big papy 3 · 0⤊ 0⤋
Earth has an unfair over-representation in the scientific and political arenas. Did you that not one delegate or astronomer from Pluto ever came to argue their status as a planet? Bush bumped 'em off!
2006-09-30 00:54:26 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Now they are saying Jupiter isn't a planet?
I thought it was just Pluto they were messing with
Heck...next they will be saying the sun is not a huge star
2006-09-30 00:54:02 · answer #6 · answered by Jessi 7 · 0⤊ 0⤋
asteroid is the one which is usually smaller in area and comets possess a tail which consists of dust.then keeping in view that earth is the fifth largest planet in the solar system,how could you call it a asteroid.i hope you understood.
2006-09-30 01:30:54 · answer #7 · answered by pepsi 1 · 0⤊ 0⤋
Because it meets all the rules of a planet set by the IAU.
Oh, and Jupiter is a planet, whoever told you it wasn't is a retard.
2006-09-30 01:04:50 · answer #8 · answered by Eddy G 2 · 0⤊ 0⤋