Cancer the Crab is the faintest constellation of the zodiac. But - if you'll note the stars in the moon's vicinity on February 24, 2021 - those stars can help you find Cancer.

A new atlas of nearby binary stars plots more than a million pairs and reveals a profusion of identical twins.

On February 23, 2021, you'll find the bright waxing gibbous moon shining close to the 2 brightest stars in the constellation Gemini, Castor and Pollux. Procyon, the Little Dog Star, is also nearby.

Check out this amazing new video from NASA's Perseverance rover, showing its own descent and landing on the surface of Mars last week. Truly, it's like nothing seen before! Also, the first-ever audio from Mars ...

To find alien life in our universe, scientists have considered searches for optical lasers or even giant energy-harvesting structures known as Dyson spheres. Now they're suggesting a more mundane sort of search, a hunt for air pollution in exoplanet atmospheres.

Will you see Saturn and Mercury in the east before sunup these next few mornings? It won't be easy. They're near the sunrise. Their quasi-conjunction comes on February 23.

For the first time, astronomers have detected the presence of a throng of black holes crowding near the center of an ancient globular cluster.

Jet contrail shadows may appear to be cast by a low-altitude bright light shining upwards. In fact, this shadow is normally cast on clouds below the jet and its contrail.

A magnetic reversal 42,000 years ago helped bring about earthly extinctions, scientists said, accompanied by changes in the sky including electrical storms and widespread auroras. "It would have been scary," they commented.

The waxing moon this weekend shines inside a large pattern of stars called the Winter Circle, or Winter Hexagon.