He explains that gravity is the force that keeps spacecraft and moons in orbit around planets and planets around stars. Astronauts in the International Space Station experience weightlessness ...

Gravity keeps you on Earth; otherwise, you would float away into space. But gravity also makes ... Hello, curious kids! Do you have a question you’d like an expert to answer?

Ever wondered what happens if you start crying in space? Read on. What happens when you strike a match in zero gravity? The first thing Neil would like to make clear is this - it isn’t advisable ...