the bigger the planet the more gravity.the smaller the planet the least gravity
Gravity, of course has a central role in formation of planets. It's believed that the planets origin can be traced to the debris swirling around a young star. The term used for coming together of particles or bodies and joining together is 'accretion'. Gravity is the reason behind accretion . Small debris join together due to accretion and this accretion occurs further to give rise to larger and larger bodies like planets . Without gravity, this could never have occurred.
It keeps the solar system together because without it we would be floating around. :)
Describe how gravity inertia and friction play a role in throwing a ball
Gravity plays the central role; without gravity, there would be no such thing as an orbit.
Planets play no role in land formation of the earth
It doesn't!
gravity pulls it.
gravity clumped stars together, created planets and stopped everything from moving at the speed of light
maintains planets in their orbits; makes stellar bodies round
Gravity is the force that keeps galaxies and solar systems together.
It makes it spherical.
A crucial role. Without gravity, matter would never have gathered together, to form galaxies and stars.