Here's how the astronomical phenomenon influences our planet—from the length of our seasons to the way Earth moves through ...

When we think about orbits, we usually picture the Earth zooming around the sun. But does the sun just sit there? Or is it on its own journey? I asked my friend Guy Worthey. He’s a space scientist at ...

Earth reaches its closest point to the sun in its 2026 orbit on Jan. 3. The sun will appear larger in the sky than on any ...

A planet's year length depends on its distance from the Sun. Planets closer to the Sun have shorter years. A planet's rotation speed is unrelated to its year length. Planets' orbital speeds vary ...