Evidence that we live in a spiral galaxy is all around us early in the morning in late spring.

The edge-on lenticular galaxy NGC 3115 is also called the Spindle Galaxy for its distinctive shape, visible in binoculars or ...

The Lagoon Nebula (M8) in Sagittarius appears highest around 3 A.M., when it soars above the Teapot of Sagittarius.

The Sickle is a famous asterism in Leo, which now also hosts Mars in the evening sky. Mars has now crossed the border from ...

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

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

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

Also known as the enigmatic "hidden galaxy," IC 342 is a big barred spiral with low surface brightness in the constellation ...

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

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

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.