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

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

Friday, July 4 Mercury reaches its greatest eastern elongation from the Sun, standing 26° from our star at 1 A.M. EDT. We’ll ...

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

The Axiom Mission 4 launch sent an international crew to the ISS, advancing commercial spaceflight and preparing for the ...

Sweeping views of nebulae and dancing galaxies prove the telescope’s enormous field of view and ultra-high-res capabilities.

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

The breathtaking celestial displays known as the aurorae — the aurora borealis in the Northern Hemisphere and the aurora ...

Rising Moon: A terrific trio “Over here!” A triplet of magnificent large craters practically beckons us on the evening of June 3rd. It’s the Moon in a classic, highly photogenic profile ...

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

Charles Messier was born in Badonviller, France, on June 26, 1730, the 10th child of court bailiff Nicolas and his wife ...

A combination of a dynamo-generated magnetic field and massive impacts could explain the highly magnetized rocks in some lunar regions.