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 ...

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

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

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

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 ...

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

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

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

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

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

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