2006-08-22 21:58:44 · 14 answers · asked by army g 1 in Science & Mathematics ➔ Earth Sciences & Geology
How do planets stay up in the space?
Answer:
As you know, planets circle the sun and the sun holds them in a gravitational grip. If the planets didn't have their own momentum, they would fall directly into the sun. But since they do have momentum (quality of any object with mass and velocity), they do not. They are in a perpetual fall towards the sun, but never really fall to it. If they would slow down, planets would fall into the sun, and if they went faster, they would shoot off themselves into deep space.
Note: the Sun is much more massive than the Earth, so the planets don't fall down (to Earth) because they are orbiting the Sun, not the Earth.
2006-08-24 21:33:58 · answer #1 · answered by hamdi_batriyshah 3 · 0⤊ 0⤋
Lol. There is no gravity. So they don't stay "up". They just stay put. Or they may all be falling and we don't know.
Actually athe planets are orbiting the sun. The stars (sun included) are going round some center point in the galaxy and the whole galaxy itself is moving... so there is no question about "staying up in space"
2006-08-23 05:05:20 · answer #2 · answered by blind_chameleon 5 · 0⤊ 0⤋
They are kind of "suspended" within the solar system, balanced between two forces.
One is the "inward" gravitational attraction by the sun and the other is the "outward" centrifugal force because of their circular orbit around the same sun.
There are more forces of course, but these are much weaker than the two I mentioned. An example of these is the gravitational attraction by other celestial bodies in the solar system, mainly other planets.
2006-08-23 05:21:26 · answer #3 · answered by Hi y´all ! 6 · 0⤊ 0⤋
They don't need to because there is no gravity in space.
What stops them from being sucked in to the sun is the fact that we are moving fast enough to orbit round it without getting any closer. If the earths orbit around the sun slowed down (which it can't) or the suns gravitational pull strengthened (somehow) we would spiral closer and closer to it and eventually hit it. If by some miracle we don't burn up on the way that is.
Pleb!
2006-08-23 05:53:32 · answer #4 · answered by Anonymous · 0⤊ 0⤋
planets rotate around the center of gravity of the system, which is more or less the sun, plus gravity effects from other planets,
the acceleration of rotation (centrifugal force) is equal to the gravity pull.
2006-08-23 05:32:46 · answer #5 · answered by Anonymous · 0⤊ 0⤋
i think it is gravitational pull from the sun n planets. dats wad makes them revolving around the sun. it can be that space has no gravity thus allowing them to float but revolving ard the sun. why must be the sun?
2006-08-23 05:25:42 · answer #6 · answered by behind 2 · 0⤊ 0⤋
because of gravitational pull.. gravity holds the planet in space...
2006-08-23 05:02:36 · answer #7 · answered by Jeunesse 2 · 0⤊ 0⤋
How geocentric of you to say that the planets are "up" in space...
2006-08-23 08:14:49 · answer #8 · answered by young108west 5 · 0⤊ 0⤋
I will just say that the Lord God keeps them in their locations, sun, earth, other planets, the stars.
Of course, astronomers tell us the stars are moving away from each other in space, still the Lord God keeps them as He moves them in the same pattern to each other.
Thou, O Lord, art wonderful beyond our comprehension!
2014-04-06 07:28:43 · answer #9 · answered by pachomius2000 2 · 0⤊ 0⤋
if there are not power that influence them why they shouldnt stay up there ?
2006-08-23 06:21:18 · answer #10 · answered by aviv7337 2 · 0⤊ 0⤋