The night sky tonight and on any clear night offers an ever-changing display of fascinating objects you can see, from stars and constellations to bright planets, the moon, and sometimes special ...

The brightest star in the nighttime sky, Sirius ... tens or even hundreds of billions of years—a white dwarf cools until it becomes a black dwarf, which emits no energy. Because the universe's ...

Between Feb. 23 and Feb. 28, 2025, all seven planets will align in the night sky. This alignment ... (NOTE: Planets will appear as bright stars in the sky. You will not see definition unless ...

Enjoy the Mars Triangle while it still lasts, for after mid-March it will be no more. We're now just past the midpoint of astronomical winter — that moment marking the midway point between ...