Geoff Gaherty

The moon looks strangely different in a telescope around last quarter.

Two comets possibly bright enough to be seen by the naked eye are nearing the sun.

The first quarter moon is the best time to see the moon's best lunar features.

The Earth is just 91.4 million miles from the sun today. Normally, it is 93 million miles away.

The final full moon of the year rises into the sky on Friday, Dec. 28.

The Dec. 25 night sky will offer stargazers a gorgeous view.

Stargazers can catch some great views of the giant asteroids Vesta and Ceres this week.

You may need to rise early to see Mercury, but Jupiter is unmistakable in the night sky.

Saturn and Venus will appear so close they can be seen in the same telescope view.

The Leonid meteor shower of 2012 peaks early Saturday morning (Nov. 17), before sunrise.

The moon, the planet Venus and the bright star Spica will be on view.

A conjunction between the planet Jupiter and Earth's moon will occur this week.

If you live in the Southern Hemisphere, now is the time to look for Mercury.

Star clusters, galaxies and nebulas, oh my! There's a lot to look for in the deep autumn sky.

Now is a great time to try and see the zodiacal light, a rare celestial sight.

The moon pays a visit to the Seven Sisters of Pleiades this week.

The off-kilter planet Uranus hits night sky milestone on Saturday: Opposition.

If you have a telescope, don't miss your chance to see asteroid Pallas in the night sky.

The moon will have close encounters with three celestial bodies this month.

Blue moons are not really blue. And they're not all that rare, either.

Planet Neptune is set to reach a night sky milestone on Friday, Aug. 24.

Thursday, Aug. 16, is a great time to look for the elusive planet Mercury in the predawn sky.

Tips for how to see and photograph the Perseid meteor shower.

Jupiter and its moons will put on a spectacular show for night sky observers with telescopes.

Now is the best time of the month to see the moon's many craters.