Mercury will reach its greatest eastern elongation, marking the point where it is farthest from the Sun in the evening sky.

The "new stars" are best seen from the Southern Hemisphere, but people have spotted them from the United States by looking ...

Less than two weeks later, on June 25, reports began to circulate of a second nova blossoming in the southern night sky, this ...

Look east before sunrise on Saturday to catch bright Venus and the Pleiades star cluster in a beautiful early-morning ...

Stargazers in the U.S. will find the waxing gibbous moon above the southwestern horizon as the sun sets on July 3, with Spica ...

And astronomers have a brand-new, superpowerful eye with which to see the changing cosmos: the Vera C. Rubin Observatory in Chile. The Rubin Observatory released its first images last week, and ...

Mercury begins a rapid plunge toward the setting sun. By early July, Mercury is lost in the glare of the sunset. By late July, Mars begins to sink into the ...

Two stellar explosions have created an unprecedented astronomical phenomenon, with both outbursts now visible to the naked ...