Sky This Week is brought to you in part by Celestron. Friday, October 17The Summer Triangle is now sinking in the west late ...

See the crescent moon shine with Mars at sunset on Sept. 24. The crescent moon shines close to Mars above the western horizon ...

Look to the western horizon to catch a fleeting glimpse of the thin crescent moon alongside the red glow of Mars on Aug. 26, set among the stars of the constellation Virgo. Mars will sit less than 10 ...

Catch a delicate crescent moon from Sept. 23–27 and watch it pair with Spica, Mars and Antares in the west after sunset.

Mars will shine close to the blue star Spica at sunset on Sept. 13, but you'll need a clear view of the western horizon to catch the colorful duo before they slip swiftly out of view. Both Mars and ...

Each Monday, I pick out North America’s celestial highlights for the week ahead (which also apply to mid-northern latitudes in the Northern Hemisphere).

On May 19, 2005, NASA’s Mars Exploration Rover Spirit captured a remarkable image of the sun setting beyond the rim of Gusev crater on Mars. This panoramic view, taken during the rover’s 489th Martian ...

A long-tailed comet has been spotted close to the sun, and some astronomers are predicting it could be seen with the naked ...