For years, astronomers have been searching for a mysterious ninth planet lurking in the dark outer reaches of our solar ...

As the Vera C. Rubin Observatory surveys the night sky, astrophysicists expect to unlock the secrets of dark matter, dark ...

After more than 20 years of planning and construction, the Vera C. Rubin Observatory is ready for its grand opening, and the ...

A powerful new technique is poised to revolutionize how astronomers observe black holes, by producing sharp, multicolored ...

Galaxies are incredibly complex systems that we are still struggling to understand,” observed Enrico Congiu of the European ...

Using the James Webb Space Telescope (JWST), astronomers have peered deep into one of the Milky Way's most radiation-intense ...

The never-before-seen "nova," dubbed V462 Lupi, recently appeared in the constellation Lupus, after suddenly becoming 4 ...

Understanding how the universe transitioned from darkness to light with the formation of the first stars and galaxies is a ...

V462 Lupi, a star in a distant binary system, has exploded in a rare cosmic event that may be briefly visible to the unaided ...

Gaia, Europe’s Milky Way–mapping spacecraft, shut down earlier this year. It was arguably the most important—and most ...

Webb discovered dozens of small, powerful galaxies from 800 million years ago that likely drove cosmic reionization by ...

Is the Hubble constant—a key part of how we measure the expansion of our universe—in a crisis? Some cosmologists say yes.