The ringed planet reaches opposition, Mars slips past the open cluster M35, and the original Cepheid variable shines in the ...

When nighttime light disrupts the body’s natural rhythms, consequences may include a higher risk of Alzheimer’s disease, a ...

Volcanoes may have been erupting on the Moon well into the age of the dinosaurs, new analysis of lunar samples suggests.

The results are in line with theory — but the key to an accurate measurement was understanding how dusty the galaxy is.

Take some time to point binoculars or a telescope at open cluster NGC 457, which lies in the constellation Cassiopeia. You’ll first notice a pair of bright stars that give this deep-sky object the ...

Anyone who has developed an interest in stargazing has certainly heard of the Messier and NGC catalogs. These publications ...

Find out what the latest and greatest books, telescopes, accessories, and other products in astronomy are this month.

Over decades of observations across a broad range of wavelengths, M31 has unlocked our understanding of the vastness of the ...

Venus lingers after sunset, Saturn and Neptune reach opposition, and Mercury makes its best morning appearance in the ...

Boeing Starliner astronauts Barry “Butch” Wilmore and Suni Williams will remain in space another six months, miss ...