ESA’s decade-long Milky Way Gaia mapping mission still has tons of data to release over the next few years. Expect surprises.

There are generally three types of calendars: the Gregorian calendar, the lunar calendar, and the lunisolar calendar. Each ...

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

On Sunday outside the Egyptian Theater on Main Street, a large group of dancers in hot pink hats broke out into a ...

A U.S. military joint task force did some training recently off the Florida coast, preparing to help rescue astronauts from ...