Harry Clement Stubbs – perhaps better known by his penname, Hal Clement – was born near Boston on May 30, 1922. Stubbs earned a B.S. in astronomy from Harvard University in 1943, followed by master’s ...

The Kite of Boötes is high in the east after sunset, offering a simple star pattern to trace out with your naked eyes.

Enjoy May’s second Full Moon, see Mercury at its best, spot Titan near Saturn, and much more in the sky this week.

SpaceX has FAA approval to conduct up to 25 annual Starship launches and landings at Starbase in Texas. It plans to build V3 pads on Florida’s Space Coast and is also exploring international launch ...

Cape Canaveral Space Force Station (CCSFS) in Florida resumed operations Friday following the explosion of Blue Origin’s New Glenn rocket during a test Thursday night. Space Launch Delta 45 (SLD 45), ...

Today in the history of astronomy, Eddington’s eclipse expedition proves Einstein’s theory of general relativity.

Venus and Jupiter are visible in the evening, while there's a conjunction of Mars and Uranus in the predawn sky.

The smallest planet appears after sunset as the waxing Moon reaches First Quarter and star clusters shine in the sky this ...

On May 23, 1967, a highly active sunspot region, McMath Region 8818, produced a series of solar flares. The events were massive, including a rare white-light flare and one of the largest solar radio ...

When organizers of the 1933 World’s Fair in Chicago wanted a splashy and futuristic way to kick things off on opening night, astronomer Edwin Frost of Yerkes Observatory had an idea: Turn on the ...

Main-belt asteroid Egeria is sliding past several stationary background stars tonight, offering a chance to catch its ...

Slicing through the Montes Alpes mountain range, Vallis Alpes is a favorite feature to view on the First Quarter Moon.