Celebrate International Dark Sky Week by hosting a backyard stargazing party. Experts suggest optimal timing with clear skies and minimal moisture for ...

That’s us.’ From Pale Blue Dot (1994) by Carl Sagan. Photo courtesy NASA/JPL-Caltech But what, exactly, should we make of ...

The new moon occurs April 27, and a day later Venus and Saturn will make a close approach to each other (known as a ...

Astronomers have stumbled upon yet another ghostly galaxy that appears to be devoid of dark matter, the elusive stuff that ...