Planets with a large amount of mass.
Large planets have more gravity than smaller ones
GRAVITY... gravity means that objects are "attracted" to other objects, and the larger the object, the more GRAVITY will "attract" the object. The sun's gravity is too large for the planets to overcome.
No. All planets, moons, and stars have gravity. Techincally, anything with mass has gravity, but it is only noticeable with very large objects.
Large Gravity = large Mass
Planets have gravity because they have mass.
All planets have gravity- Some more than Earth, some less. Other planets that are large enough do have air- but not made up of the same gasses as Earth.
It is gravity that holds the planets in their orbits around the sun. Gravity is what gives "shape" to the solar system, to galaxies, and is the large-scale organizer of the universe as a whole.
The other planets do have gravity.
gravity is something that can affect the planets.
The more gravity something has, the more gravity it has. A planet, like Jupiter, can have 30-something moons because of it's large mass. And the solar system exists only because the sun has so much mass it generates gravity for all the planets.
Yes. All planets have gravity. Earth is one of those inner planets.
The premise of this question is incorrect; all planets have gravity.