The moon is about 384,400 kilometres from Earth right now and our days are about 24 hours long. The moon pulls on Earth’s ...

For centuries, Earth has been pictured as a near-perfect blue sphere floating through space — but a new high-precision gravity model is revealing a far stranger reality. Using detailed measurements ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. Earth is illuminated against the blackness of space in this ...

But the amount of sunlight that Earth reflects—known as its albedo—changes. And that means the amount of energy that Earth absorbs changes, too.