Observational Astronomy
March 5, 2024
The speed of light in a vacuum is 300,000 kilometers per second It is the fastest travel speed in the Universe-- nothing travels faster than light! And because the laws of...
March 5, 2024
Be a little careful the Moon does rotate If you stood on the Moon, the stars would rise and set, just like they do on Earth, except that a lunar day is a month long, the same...
March 5, 2024
And that's the purpose of this site When you send an astronomy question to us, it will be forwarded to one of the participating scientists here at Cornell Most of us are graduate...
