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

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

A 155-year-old typo made an 1848 train delay in England look like the earliest case of space weather disrupting technology.

Choosing full cutoff fixtures and the appropriate amount of outdoor lighting is more important than the specific light source you use.

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

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 ...

Tonight’s a two-for-one deal as the Double Cluster shines in Perseus’ northwestern corner, ready for wide-field or closeup ...

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

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

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

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

Neptune reaches opposition this evening at 10 P.M. EDT, placing the planet at its best for viewing. However, with the nearly ...