Lunar Prospector launched on January 6, 1998, as the third mission within NASA’s Discovery Program, which emphasizes frequent ...

At the 247th meeting of the American Astronomical Society, this one held in Phoenix on January 4-8, Andrea Dupree of the Center for Astrophysics|Harvard & Smithsonian presented a talk entitled, ...

Nearly all stars are found inside or around galaxies, but there are ways for stars to escape into intergalactic space.

After four centuries of advances, astronomers now capture the Sun’s swirling, dynamic features in stunning detail.

Proximate to the Moon, Regulus (Alpha Leonis), exhibiting an apparent magnitude of 1.3, will be visible. The angular separation between the Moon and Regulus is expected to change on an hourly basis.

Rising shortly before midnight on January 4 and best viewed in the hours before dawn, Comet 24P/Schaumasse is located in northern Virgo, traveling through a rich region of the sky. Although the bright ...

Hundreds of millions of debris fragments zip around Earth at speeds exceeding 15,000 mph, posing a constant threat to astronauts and spacecraft. Thanks to prohibitive costs, no one is bothering to ...

The world’s best-selling astronomy magazine offers you the most exciting, visually stunning, and timely coverage of the heavens above. Each issue includes expert science reporting, vivid color ...

Astronomy magazine and Astronomy.com accept digital images for publication. Submit images via email as attached JPG files to readergallery@astronomy.com. TIFF files are also accepted if the file is ...

The speed of light is a fundamental constant, approximately 299,792,458 meters per second. It's the same for all observers and hasn't changed measurably over billions of years. Nothing can travel ...