Today in the history of astronomy, an eclipse record helps illuminate the timeline of the ancient world.

The Red Planet stands less than a degree from Leo the Lion’s brightest star in the evening sky tonight, visible in the west.

Inflation and budget issues are threatening to hobble NASA’s most in-demand telescopes.

The Whirlpool Galaxy (M51) and its smaller companion NGC 5195 are excellent targets tonight before the Moon rises.

Wachmann, also known as Schwassmann-Wachmann 1, glows at 13th magnitude near Leo’s forefoot early this evening.

Astronomy interviews Sally Ride's life partner Tam O’Shaughnessy and director Cristina Costantini ahead of 'Sally' ...

Although the repeating cycle of sunspots was first seen in the mid-18th century, the fact that the Sun went through cycles ...

This Milky Way photographer has had many shots “ruined” by equally beautiful lights. Here are some of the best aurora images ...

As June brings us the summer solstice, these new products will help you get the most from warmer nights spent at the ...

Today in the history of astronomy, Albert II provides invaluable physiological data, part of a long line of animal ...

June’s Full Moon is also called the Strawberry Moon, but don’t let the name fool you — it won’t be turning pink in the sky!

A nearly Full Moon passes close to the ruby-red star at the heart of the Scorpion, visible in the early-morning hours.