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

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 ...

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

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

The waning Moon passes through Cancer, sharing the constellation with both Mars and the Beehive Cluster (M44).

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.

The September Full Moon rules the skies this evening. Because it is the Full Moon closest to the equinox, it is called the ...

Jupiter’s largest moon, Ganymede, transits the gas giant’s disk this morning. Some part of the event, which lasts more than ...

Proposals are submitted annually by scientists who wish to use these facilities, and are reviewed by the Telescope Allocation Committee.

The solar system’s most distant planet is now at opposition and looking its best. Search it out after dark using optical aid.

The 192nd asteroid discovered in the main belt is now at its best, located within a diamond shape of brighter field stars.