What did Newton understand that was such a revolution? Can someone just... explain gravity to me? Let's start with a ...

Dark energy is the placeholder name scientists have given to the unknown force causing the universe to expand faster and ...

A biochemist breaks down challenges that astronauts Suni Williams and Butch Wilmore will face after their long duration in ...

Isaac Newton - isn't he the guy who discovered gravity? Great! So, what's gravity? Aaaah, gravity is the force that makes objects fall towards the ground. And, without gravity, we'd all float!