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 ...

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

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

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

South Korea's Nuri rocket carries a batch of Earth-observing satellites, SpaceX launches a military mission and a Starlink ...

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

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

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