Celestial Events

The Perseid meteors appear to stream away from their radiant near the border of Perseus and Cassiopeia. And while you're outside on a dark night, don't forget to look for the Double Cluster and the Andromeda Galaxy, two of the easiest "faint fuzzies" to spot with your unaided eyes.

Prepare for the Perseids

August is the best month to view meteors from the Northern Hemisphere. And conditions are ideal this year, with activity peaking on the new-Moon night of Sunday–Monday, August 12–13.

September evening sky

Astronomy Day, Redux

For the second time this year, skywatchers the world over are celebrating Astronomy Day. If the sky is clear this weekend, you'll be treated to a bounty of late-summer stars and planets.

The Moon passes 1½° north of Mars around midnight EST on the night of November 26–27.

Mars Is Here!

The Red Planet is now nearly as bright — and appears nearly as big through a telescope — as it will any time this year.

Geminid meteor

The Geminids Are Coming

The best time to view the 2007 Geminid meteor shower from North America is the night of December 13–14, with good prospects the following night as well. In Asia, December 14–15 should be better, and in Europe, it’s a tossup between the two.

Comet 8P/Tuttle will be approaching its maximum brightness as it crosses Cassiopeia in the next-to-last week of December.

The Other Bright Comet of 2007-08

Comet 8P/Tuttle is now near its peak. Although nowhere near Comet Holmes in total brightness, its light is concentrated in a much smaller area, making it considerably more prominent when viewed from typical suburban locations.