Two jovian moons cross each other’s paths from our point of view, appearing to merge in the telescope eyepiece.

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

Discover this year's most exciting new astronomy products selected by Astronomy's contributing editor and gear guru, Phil ...

Astronomers can use lensing to learn about everything from the makeup of the universe to the nature of extrasolar planets.

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

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

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

From the Crab Nebula to the Orion Nebula, these 10 winter deep-sky objects are easy to find and perfect targets for small ...

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

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

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 ...

Planet Venus comes to a halt against the background stars; catch it shortly after sunset along with Mercury, before the pair ...