What Is Gravity.
Gravity is a force that keeps everything on the ground and gravity pulls everything on the ground.zero Some people think zero gravity means everything would stay on the ground then you are wrong zero gravity means everything would have been flying.
What is the position,motion,components of our solar system.
The sun is the middle of our solar system and all of the planets orbit around the sun.The speed of the planet is 0.5 km/s and when you are sleeping you will not even feel the planet spining. Our solar system consists of an average star what we all call the sun