how was this planet formed
No. The moon formed after a planet-sized object collided with Earth.
Mercury
yes. If you have planet with the same properties as Planet Earth., there will be life on it.
mercury
It is a process when the planet is formed, and the rotation/revolution of the planet around the sun.
It captured gas.
the sun the sun is a star
No planet ever existed where the asteroid belt is. The mass is insufficient for a planet to have formed from all that debris.
Their are many different reasons for this, it depends on when the planet is formed how close it is to the sun, so our planet just formed at the right place at the right time.
approximately, yes
look some where else you bum
i believe mercury