Space News

Even the ancient astronomers knew there was something different about the planets. Unlike the rest of the stars, the planets move across the sky, backwards and forwards, round and round. It wasn't until Copernicus that w...

So you've seen all of the classic naked eye planets. Maybe you've even seen fleet-footed Mercury as it reached greatest elongation earlier this month. And perhaps you've hunted down dim Uranus and Neptune with a telescop...

Greetings, from the Kitt Peak National Observatory, in Arizona! I'm here on a weeklong observing run, which is arguably the coolest and hardest part of the job. (...)Read the rest of Behind the Scenes at Kitt Peak Observ...

The full Moon of June 23, 2013 was the largest Moon of the year. This so-called "Super Moon" was at perigee -- or at its closest point in its orbit to Earth, and was 14% bigger and 30% brighter than other full Moons of 2...