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

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

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

Also at opposition this week, asteroid 2 Pallas is passing near a field star with similar brightness to the main-belt world ...

Views from three space telescopes combine in this look at the Tarantula Nebula, spanning wavelengths from X-ray to infrared.

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 ...

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

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

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

A crescent Moon passing in front of our solar system’s largest planet is a rare and brilliant sight. Here's how to see it for ...

Early on the 6th, our satellite passes in front of the solar system’s largest planet in a relatively rare event.