Ever since Isaac Newton famously talked about gravity, its dominance as a force in our solar system has been well known. It's responsible for the orbits of the planets and their satellites, but there ...

In it, he suggested that gravity is not a force, as Newton had believed, but the result of a curvature of the space-time continuum -- the four dimensional world in which we live. He used a thought ...

Yes.Ooh! Good catch.But what exactly is gravity? Gravity is a force of attraction between any two objects.When you let go of the apple, it's pulled down towardsthe centre of the Earth. No matter ...

The rest of the universe appears to be made of a mysterious, invisible substance called dark matter (25 percent) and a force that repels gravity known as dark energy (70 percent). Scientists have ...

Blue Origin just launched a first-of-its kind mission to suborbital space. The company, which was founded by Amazon's Jeff ...