The small saturnian moon Dione passes in front of the ringed planet, bringing its tiny shadow along for the journey.

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

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

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

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

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 ...

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

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

Scientists once thought luminiferous ether pervaded the cosmos. Michelson and Morley’s ingenious experiment to find it ...

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

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