In a groundbreaking discovery, astronomers have traced a fast radio burst, or FRB, to the outskirts of an ancient, quiescent elliptical galaxy.

The new moon of January will be at 7:36 a.m. Eastern Time on Jan. 29, according to the U.S. Naval Observatory, and two days ...

This week’s first small-telescope target is Sirius B, the companion to the night sky’s brightest star, Alpha (α) Canis Majoris. American telescope-maker Alvin Graham Clark discovered that ...

Any clear winter night this month, look south between 8 and 10 p.m. to spot the large hourglass shape of Orion the Hunter. In ...

Jupiter and Mars are in the eastern sky. Those two bright stars ... you’ll see a very bright star. That’s Sirius, the sky’s brightest star. Measure two fist-widths to the left of Sirius ...