A new analysis of the sky has finally confirmed where the missing half of the Universe's visible matter has been hiding.

In the grand puzzle of the cosmos, one question continues to defy easy answers: how fast is the universe expanding?

"We've always known that we need something to complete the puzzle, but we haven't really known what shape or form those ...

A never-before-seen image of the cosmic microwave background, combining data from the Atacama Cosmology Telescope (ACT) and ...

"What makes Zhúlóng stand out is just how much it resembles the Milky Way—both in shape, size and stellar mass," said the ...

Could the universe be rotating? Discover how this theory may solve the Hubble tension in modern cosmology and physics.

Euclid's first data release offers a breathtaking glimpse into our universe, revealing over 26 million galaxies and ...

A newly released image from the Hubble Space Telescope shows the charming Sombrero Galaxy, named for its resemblance to the ...

Since the James Webb Space Telescope (JWST) began science operations, astronomers have observed galaxies that existed more ...

Astronomers may have found the long-missing half of the universe's regular matter—and it appears to have been right under our ...

A distant galaxy that lay quiet for decades has suddenly stirred, lighting up in dramatic bursts that have caught astronomers ...

For decades, scientists have known that ordinary matter — everything made of atoms — accounts for just 15% of the universe’s ...