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…

9 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…

14 years ago