Most small galaxies that stopped making new stars in the early universe never resumed operations. Something caused their ...

Hubble revealed a universe of galaxies that existed beyond ours — but he couldn't have done it without a little help.

It feels like every other day now, new research emerges which manages to turn our understanding of the universe completely on ...

The universe really seems to be expanding fast. Too fast, even. A new measurement confirms what previous—and highly ...

The Universe really seems to be expanding fast. Too fast, even. A new measurement confirms what previous -- and highly debated -- results had shown: The Universe is expanding faster than predicted by ...

Hubble Space Telescope mapped Andromeda, revealing a chaotic history shaped by mergers. A 2.5-billion-pixel mosaic shows 200 ...

The galaxy, located in the constellation Leo, is about the same size as a star cluster within the Milky Way and is about the ...

When we turn to “complex” extraterrestrial life or “intelligent” aliens, our results were 67.4 percent agreement, and 58.2 ...

For humans, the most important star in the universe is our sun. The second-most important star is nestled inside the ...

Found less than a billion years after the Big Bang, these massive objects are upending astronomers’ timeline for how early ...

"If our eyes were able to detect X-rays, the sky would be full of dots. And every single one of those dots would be an ...

To make the historic discovery, the team of researchers turned to NASA's James Webb Space Telescope and its high-resolution ...