elliptical orbit

The Orbit of Earth. How Long is a Year on Earth?

Ever since the 16th century when Nicolaus Copernicus demonstrated that the Earth revolved around in the Sun, scientists have worked…

10 years ago

Lake Asymmetry on Titan Explained

If you've wanted to take a swim in a lake on Titan, don't: they're not lakes like we have here…

15 years ago