Latest articles by Geoff Gaherty
Year of the Comets: 2 Dazzling Comets Heading Our Way
Two comets possibly bright enough to be seen by the naked eye are nearing the sun.
Best Time to See the January Moon Is Now
The first quarter moon is the best time to see the moon's best lunar features.
Earth Is Closest to the Sun for 2013 Today
The Earth is just 91.4 million miles from the sun today. Normally, it is 93 million miles away.
Last Full Moon of 2012 Rises Friday
The final full moon of the year rises into the sky on Friday, Dec. 28.
Christmas Night Sky: Your Questions Answered
The Dec. 25 night sky will offer stargazers a gorgeous view.
Space Rocks Vesta and Ceres Visible in Night Sky This Week
Stargazers can catch some great views of the giant asteroids Vesta and Ceres this week.
See Mercury at Dawn and Jupiter All Night Long
You may need to rise early to see Mercury, but Jupiter is unmistakable in the night sky.
Saturn Meets Venus in Dawn Sky This Week
Saturn and Venus will appear so close they can be seen in the same telescope view.
Leonid Meteor Shower to Shine in Weekend Sky
The Leonid meteor shower of 2012 peaks early Saturday morning (Nov. 17), before sunrise.
Cosmic Triple Treat Will Shine in This Weekend's Dawn Skies
The moon, the planet Venus and the bright star Spica will be on view.
Moon and Jupiter Create Celestial Halloween Treat
A conjunction between the planet Jupiter and Earth's moon will occur this week.
Elusive Mercury at Its Best Now for Southern Stargazers
If you live in the Southern Hemisphere, now is the time to look for Mercury.
Best Deep-Sky Targets in Autumn's Night Sky
Star clusters, galaxies and nebulas, oh my! There's a lot to look for in the deep autumn sky.
Rare Celestial Sight: How to See the Zodiacal Light
Now is a great time to try and see the zodiacal light, a rare celestial sight.
Moon Visits Bright Star Clusters This Week
The moon pays a visit to the Seven Sisters of Pleiades this week.
How to See Uranus in Telescopes This Weekend
The off-kilter planet Uranus hits night sky milestone on Saturday: Opposition.
How to Spot Asteroid Pallas With a Telescope this Week
If you have a telescope, don't miss your chance to see asteroid Pallas in the night sky.
Moon Dances Close to Jupiter, Ceres & Mars This Month
The moon will have close encounters with three celestial bodies this month.
Blue Moon Science: Friday's Full Moon Explained
Blue moons are not really blue. And they're not all that rare, either.
How to Spot Neptune in Night Sky Friday
Planet Neptune is set to reach a night sky milestone on Friday, Aug. 24.
See Mercury and Venus Reach Orbit Milestones This Week
Thursday, Aug. 16, is a great time to look for the elusive planet Mercury in the predawn sky.
Promising Perseid Meteor Shower Peaks on Sunday
Tips for how to see and photograph the Perseid meteor shower.
How to See Jupiter's Moons Perform Shadowy Waltz Monday
Jupiter and its moons will put on a spectacular show for night sky observers with telescopes.
