See two similarly bright celestial objects with different colors pair up in the evening sky.

Today in the history of astronomy, Valentina Tereshkova parachutes into history books.

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

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.

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

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

In the northern part of the constellation you’ll find NGC 7008, sometimes called the Fetus Nebula due to its unusual shape.

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

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

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

A cloud of energetic gas lit up by a collision of galaxies spans nearly 20 million light-years, leading astronomers to ...