Gravity comes with mass so since a planet has mass there is some gravity. the bigger the planet the more mass it has. smaller planets have less gravity. so either way there is always some gravity on a planet.
There is gravity on the moon but it is a third of planet earth
The Sun's gravity works on each planet by keeping it in its orbit, because without gravity every planet would go off on a tangent and never come back.
Gravity is essential for life on Earth because it keeps our atmosphere in place, allows water to flow, and enables plants to grow towards the sun. Without gravity, our planet would not be able to support life as we know it.
Gravity holds a planet's atmosphere close to its surface. The gravitational force of the planet's mass prevents the gases in the atmosphere from escaping into space. Without gravity, the atmosphere would disperse into space.
You can't actually have a planet without gravity. Everything would just fly away into space, if it was not held together by gravity.
Yes, gravity does depend on the planet you are on. The force of gravity is determined by the mass of the planet and your distance from its center. Therefore, gravity will be different on each planet based on these factors.
The gravity on Mars or any other planet pulls you toward the planet's center.
No Mercury, either the metal or the planet is not equal to gravity. Gravity is a force of nature, not a planet or a substance.
Actually the gravity cannot affect the suns movement. But without gravity, every planet would stop orbiting and sail off out of here in a straight line.
The larger the planet mass, the bigger force of gravity it has.
Mercury, because it's the smallest if you don't consider Pluto to be a planet.
All planets have gravity.