Big changes are arriving, and there’s no avoiding them! Action planet Mars is moving into scintillating Scorpio for the first ...

September's new moon occurs on Sept. 21 and will partially eclipse the sun for skywatchers in the southern Pacific Ocean and ...

Oceans cover three-quarters of the Earth, yet only 20% of the seafloor has yet been mapped. But Seabed 2030, a joint project between the United Nations and the private Nippon Foundation, aims to map ...

My favorite planet, besides the one I live on, is on the rise in the low eastern sky during evening twilight. It’s Saturn and ...

Catch a delicate crescent moon from Sept. 23–27 and watch it pair with Spica, Mars and Antares in the west after sunset.