Mercury stands less than 3° from the Beehive Cluster in the evening sky, preparing to cross through the cluster’s outskirts ...

In this episode, Astronomy magazine Editor Dave Eicher invites you to head out sometime soon and observe the great globular cluster M22 in the constellation Sagittarius the Archer. From a dark site on ...

An enormous explosion occurred approximately 3 to 6 miles (3.8 to 9.7 kilometers) above the Tunguska River area of Siberia on June 30, 1908, when an asteroid entered Earth’s atmosphere and exploded in ...

What would you do if you woke up on a spaceship light-years from Earth without knowing why you’re there? When science teacher Ryland Grace finds himself in such a situation, he’ll need his scientific ...

Born June 29, 1868, in Chicago, George Ellery Hale revolutionized American astronomy by, among other things, championing the ...

The bright morning star Venus crosses from Aries into Taurus, closing in on Uranus for a conjunction later this week.

On his first trip to the Grand Canyon Star Party, Dave Eicher joins thousands for a week of lectures, observing, and cosmic ...

Two distant planets lie 1° apart in the morning sky, visible together in the same field of view through binoculars or a telescope.

Felton Davis offered thousands of strangers a close-up view of the Moon and planets orbiting New York City. Now he’s passing ...

Mercury hovers above the horizon near a four-percent-illuminated Moon, whose darkened face may be lit by earthshine.

The star Polaris marks the North Celestial Pole in our sky, around which all other objects in the heavens appear to rotate.

Globular cluster M15 hides within it a planetary nebula, Pease 1. Observers with large scopes and steady skies can find it.