Latest articles by Astronomer
Will New Meteor Shower This Weekend Sizzle or Fizzle?
A new meteor shower that will blaze up in the early hours of Saturday morning could be spectacular, if Jupiter's gravity has shepherded particles shed by Comet 209P/LINEAR tightly together.
Atmospheric Pressure: Definition & Facts
Atmospheric pressure is the force exerted against a surface by the weight of the air above the surface.
Weather Fronts: Definition & Facts
Weather fronts are the leading edge of a mass of air that moves into a region.
Summer Solstice Marks Changing Seasons on Earth Today
Summer official begins in the Northern Hemisphere on Friday. Here's how it works.
Types of Clouds
Clouds form in three basic patterns or classifications: cirrus, stratus and cumulus.
See Jupiter and Moon Pair Up on St. Patrick's Day
The celestial duo will dance together Sunday evening.
Comet Pan-STARRS Near the Moon Tonight: How to See It
The moon maybe the perfect guide to spot Comet Pan-STARRS in the night sky on Tuesday night (March 12).
Stargazer's Delight: Moon Gets Close to Bright Star Tonight
The waxing gibbous moon will be really close to the bright star Spica.
Serious Stargazing: Spot Bright Star Sirius This Week
The brightest star in the night sky is on full view now.
18th-Century Astronomer's Legacy Visible in Southern Night Sky
Nicolas-Louis de Lacaille catalogued the positions of 9,766 southern stars in just 11 months in the 1750s.
'Demon Star' Glowers in Night Sky This Week
The blinking star Algol is actually a pair of eclipsing stars.
Asteroid 2012 DA14's Friday Flyby: A Stargazer's Guide
How to give yourself the best chance to see the asteroid's historic close approach.
How to See a Cosmic Bunny and Dove in Night Sky
The winter night sky offers a chance to view underappreciated constellations.
NASA Rocket to Spark Light Show Over US East Coast Tonight
The bright red, artificial night sky clouds may be visible from all along the U.S. East Coast, weather permitting.
See Jupiter and Moon Shine Dazzlingly Close Together Monday
Jupiter and the moon will appear extra bright, and the closest they will be until 2026.
Two Star Clusters Shine in Night Sky This Week
These two star clusters contain hundreds of stars each.
See Venus Bid Crescent Moon Farewell Early Thursday
Venus and the moon will shine close together before dawn on Jan. 10.
Dazzling Comet of 2013 May Be Among Brightest Ever Seen
Comet ISON could put on an amazing show when it passes close to the sun late this year.
See Saturn, Moon and Star Form Cosmic Triangle Early Sunday
Skywatchers up before dawn Sunday can watch a celestial dance unfold.
Moon May Outshine Quadrantid Meteor Shower Tonight
The annual Quadrantid meteor shower peaks overnight tonight and early Thursday, Jan. 3.
Full Moon Tonight: Facts About 2012's Last Lunar Show
December's full moon rises tonight, Dec. 28, in a final lunar display for the year.
Look Up! 13 Must-See Stargazing Events in 2013
A dazzling comet, a ring-of-fire solar eclipse and more will grace Earth's skies in 2013.
Jupiter, Moon Align in Christmas Skywatching Treat
The two heavenly bodies will dance close together Tuesday night.
