A decade after the release of "The Martian" and a decade out from the world it envisions, how close is reality to fiction?

On May 21, the International Astronomical Union’s Minor Planet Center announced the discovery of 2017 OF 201, which, because ...

The waning crescent Moon contrasts nicely with Venus the morning star, with the planet quickly approaching dichotomy.

A combination of a dynamo-generated magnetic field and massive impacts could explain the highly magnetized rocks in some ...

Kemble's Cascade is an asterism in Camelopardalis in which a line of colorful stars appears to terminate with the small open ...

Our satellite is a little off-balance. GRAIL data show a mass asymmetry of a few percent between its near and far sides.

New Moon brings excellent dark-sky conditions for observing galaxies, nebulae, and star clusters in the sky this week.

A waning crescent Moon lies near bright Venus in the morning sky, offering a gorgeous pairing for visual observing or ...

Saturn and Neptune are joined by the crescent Moon in the early-morning sky as our satellite moves along the ecliptic.

DEET won’t keep a mosquito from approaching, but it can stop her (all mosquitoes that suck blood are female) from biting by ...

From a dark site, an 11-inch telescope will reveal several hundred galaxies here, so take your time and be sure of your ...

These practical telescope accessories make great gifts for Dad — and they’re all priced to keep your budget intact.