Asked by Jordyn

How does the gravity of planets and moons affect stars?

Thanks!
Answered by PsyDAG
Which planets, moons and stars?

The effect of gravity is mutual, with the effect on the stars directly related to the relative size of its planets and moons and inversely related to the distance of them from the star. However, multiple planets and moons may cancel out or reduce their final effects on the star.

Since this is not my area of expertise, I searched Google under the key words "<I>star planets moons gravity</I>" to get these possible sources:

http://www.school-for-champions.com/science/gravity_universe.htm
(Broken Link Removed)

In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/searchtools/.

I hope this helps. Thanks for asking.
Answered by RickP
The planets orbiting a star can make it "wobble", because while it is obvious that the star gravitationally influences the motion of the planets, gravitational attraction is a two-way affect, and the planets also influence the star's motion (though since they are much less massive, the sun is "perturbed" less so than the planets).

Seeing the wobble of stars is how astronomers detected the first several dozen exoplanets (planets outside our own solar system).

Answered by chloe
what is a cell wall
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