High Impact Kete #5: Gravity

Gravity

Gravity is one of the most important forces in our solar system. It is a natural force which pulls everything and anything to the centre of the Earth. It is the reason objects, when dropped, fall to the ground, not to the ceiling, and why we don't float. The closer two objects are to each other, the more gravity will affect them.

In space, there is no gravity, and that's why you see astronauts floating in their spaceships instead of walking on the ground. This is called an anti-gravity environment. 

It was Sir Isaac Newton that discovered gravity back in the 15th century.