A radio telescope in South Africa has unearthed a giant galaxy—dubbed a "cosmic megastructure"—with plasma jets that measure ...

Alignments of five or more planets are rare—there will be two more featuring five or more planets this year, but after that ...

Plus: Saturn’s moon Iapetus is visible, our Moon passes the bright star Spica, and Mars skims south of Pollux in Gemini in ...

A little-known chapter of the Hubble Space Telescope’s history is a reminder of the risks of looking at the sun ...

Venus, Saturn, Jupiter and Mars are all visible after sunset, but social media claims about it being a rare "planetary ...

Venus and Saturn will be in conjunction this weekend, appearing side by side in the night sky during January's post-sunset ...

The competition is organized by the Royal Observatory Greenwich in London, England, in association with BBC Sky at Night ...

You’ll be able to view a rare alignment of planets this month and into February. Our astrotourism expert reveals the best ...

Experts with Sky & Telescope magazine say using binoculars or a telescope at mid-northern latitudes might be your best chance to see Comet ATLAS, but you need an unobstructed view of the southwestern ...

ESO estimates the complex will leak as much light pollution as a city with a population of about 20,000. Parts of the ...

Amateur astronomers who have purchased telescopes from leading suppliers in the U.S. may be entitled to a payment from a ...