A new European Southern Observatory (ESO) study has found that current proposals to launch more than 1.7 million satellites ...

Astronomy Photographer of the Year 2026 shortlist features eclipses, nebulae, aurorae and Milky Way images ahead of the ...

Second only to black holes, neutron stars—incredibly dense star remnants—are the densest objects in the universe. When ...

Plans for 1.7 million new satellites have astronomers sounding the alarm, with a new ESO study calling for a hard cap of 100,000.

The Trump administration has tapped a Harvard professor with controversial theories about aliens to lead a team of scientists ...

Science operations at the United Kingdom Infrared Telescope will conclude Sept. 15 so it can be decommissioned, the ...

A Jupiter-size exoplanet orbiting a dead star baffled astronomers. But the planet named WD 1856 b could preview the fate of ...

Looking for a sky event this week? Check out our full Sky This Week column. July 1: Venus in Leo High in the north late ...

The plans to swarm Earth with huge, extremely bright satellites represent an “existential threat” to telescopes viewing the ...

Massive galaxies? Dusty black holes? Black hole stars? Scientists have raised a lot of theories around what the crimson blobs ...

NSF–DOE Vera C. Rubin Observatory has officially begun full operations for the Legacy Survey of Space and Time (LSST), one of ...