In the Sky Tonight

Curious what's in tonight's sky? Take this short video tour. Plus, find out how a simple planisphere reveals the location of stars and planets.

Ask the Astronomer

Recent questions answered by our astronomers:

If galaxies have black holes and two such galaxies were colliding, would the two colliding galaxies form one giant black hole?

See the Space Station!

The International Space Station circumnavigates the Earth once every 90 minutes. Check out this schedule for dates and times when it passes overhead in your neighborhood. With the brightness of Jupiter, it can be seen even in big cities where light pollution is high.

Astronomical Tales

What do the Bubonic Plague, a nervous breakdown, and failing as a farmer have to do with the greatest scientific publication of all time?

Telescope Advice and Consulting

Shopping for a telescope? Talk to us first. Personal and precise telescope advice from real astronomers.

Orion Telescope Reviews

A review of the Orion telescope and intelliscope product lines by astronomers at WPO.

Celestron Reviews

Personal experiences of the Celestron line of telescopes and binoculars, told by the astronomer who worked alongside Clyde Tombaugh, discoverer of Pluto.

Exoplanetary Discoveries

NASA is working on a new space-based telescope that is 2,000 times more sensitive than the Hubble. They're calling it the Advanced Technology Large Aperture Space Telescope and they say it will be capable of detecting life on Earth-like planets orbiting other stars.