Sir Isaac newton showed that all objects in the universe attract each other through gravitational force, in other words, he was the one that showed that planets and moons stay in orbit due to gravity :)
This is proved by Sir Isaac Newton who worked on the Universal Law of Gravitation.
Isaac Newton
Mass and gravity
Any moon is held in orbit by gravity, just as the planets are held in orbit around the sun by gravity.
The Sun`s gravity holds all the planets in orbit in space.The gravitational attraction from our Sun.
Moons orbit planets. Planets orbit stars. Some stars orbit other stars, or orbit their mutual center of gravity. Stars orbit the center of the galaxy. Galaxies may orbit the center of the "galactic group".
Isaac Newton
Asteroids orbit the sun. Moons orbit planets and planets orbit the sun. So you could say the moons orbit the sun. However, moons are kept in their orbits by the gravity of their planet and planets are kept in orbit by the gravity of the sun. So in that sense, moons do not orbit the sun.
gravity
the planets do not orbit the moon but the moon orbits the planets because of gravity and inertia
Mass and gravity
Any moon is held in orbit by gravity, just as the planets are held in orbit around the sun by gravity.
The Sun has no moons. Moons orbit Planets > Planets orbit the Sun.
because the planets' gravity pull them so that they do not go away and the moons revolve around them with a constant speed so they stay in their orbit
Because stars have a greater amount of gravity
Yes, gravity is present in a vacuum. If it weren't, planets wouldn't orbit the sun, moons wouldn't orbit planets ect.
The Sun`s gravity holds all the planets in orbit in space.The gravitational attraction from our Sun.
Most moons orbit close enough to their planets that the planet's gravity would render any orbit around a moon unstable in the long term.