The stars look static in the sky, but are they moving? How fast, and how do we know?
Aug 10th: Do Stars Move? Tracking Their Movements Across the Sky
Tag: guide to space
Jul 6th: Did We Need The Moon For Life?
Astronomers hate the Moon because it ruins perfectly good observing nights. But is it possible that we all need the Moon for our very existence?
Apr 28th: How Fast Is Gravity? Einstein’s Predictions for the Speed of Gravity
How long would it take for the gravitational well created by the Sun to disappear, and the Earth and the rest of the planets fly off into space?
Mar 21st: How Can We Save The Sun?
Bad news, our Sun is living on borrowed time. It’s only got a few billion years left. How can we save the Sun?
Feb 22nd: What is Time Dilation?
One of the strangest implications of Relativity is the concept of time dilation; how people moving at different speeds will experience different amounts of time.
Jan 27th: How Can We Live on Mars
Why live on Earth when you can live on Mars?
Oct 31st: When Was The First Light In The Universe?
The speed of light gives us an amazing tool for studying the Universe. Lets study about it.
Sep 30th: Why Are There Seasons?
Fraser Cain explains why we have seasons. Why is it warm in the summer and cold in the winter? It all happens because of the tilt of the Earth’s axis.