Why does the moon orbit earth instead of the sun?


6 Answers

John McCann Profile
John McCann answered
Actually, as the moon orbits earth the earth orbits the sun bringing the moon along with it.

This is the reason and it does have something to do with masses an gravity, Both Newton and Einstein.

F =G(m1m2/r^2)

The force of gravity is inversely proportional to the mass of the two objects and the distance (r) between them.
Atul Chhotray Profile
Atul Chhotray answered
The moon orbits the Earth, which orbits the sun. So in a way the moon orbits both the Earth and the sun. In physics an orbit is not necessarily circular or elliptical in shape.

The orbit of the moon around the sun is complicated as it is no longer a two body problem i.e. Along with the moon and the sun's gravity we will have to include the gravity of the Earth as well.

The moon's mass is pretty small as compared to both the Earth and the sun. However it is much closer to the Earth than the sun. Hence it is more influenced by the gravity of the Earth than the sun's.
Dom Mann Profile
Dom Mann answered
Actually, the earth/ moon system is more "binary planets" than primary and secondary. Isaac Asimov wrote a wonderful essay "Mooning around" which showed that (then) unique in the solar system the earth/ moon pair were held more each to the sun than to each other. (since, it has been shown that Pluto/Charon have a simlar behavior).
Cengiz Polat Profile
Cengiz Polat answered
It has something to do about the earth's mass i think.
John Profile
John answered
Hahahahahaha,so you can have night and day in most of the known world.
thanked the writer.
John commented
I should have said since the sun is really a gas giant/star then all planets orbit around it as the center of our universe even if they are orbiting another planet at he same time. : )

Answer Question