The planet Mercury stands 25° east of the Sun. View the solar system’s smallest planet, along with the crescent Moon, in the ...

Integrity served as a deep-space testbed for technology that could aid cancer patients, serve remote clinics, and supercharge ...

The Red Planet passes through M44, also known as the Beehive Cluster, a bright group of young stars in Cancer the Crab.

The ringed planet reaches opposition and the Moon occults Jupiter in a rare event not to be missed in the sky this week.

Saturn reaches opposition this month, Neptune lingers near Saturn, Mars transits the Beehive, and Jupiter is occulted by the ...

The ringed world’s brightest moon is passing north of its parent planet overnight tonight, making it particularly easy to ...

Extragalactic globular clusters millions of light-years away are hiding in your astroimages. Here’s how to find them.

The Red Planet plows through an open cluster, Mercury reaches greatest eastern elongation, and New Moon brings darkness in ...

Since ESA’s Herschel observatory went dark in 2013, no space telescope has been observing in the far-infrared. NASA's new ...

This dense globular cluster is the only Messier object in Capricornus, perfectly positioned for evening observing in the Sea ...

New Moon occurs at 11:50 A.M. EDT. With extra-dark skies, you’ve got a chance to spot the zodiacal light in the early-morning hours, reaching up from the eastern horizon before dawn. This faint glow ...

The University of Wisconsin-Madison physicist and IceCube Neutrino Observatory principal investigator won the Royal Swedish Academy of Sciences' top honor for catching "ghost particles" from the ...