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.

In a study published in the Astrophysical Journal, a team of researchers led by Kristen McQuinn, a scientist at the Space ...

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

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

Galaxies like the Milky Way grow by merging with smaller galaxies over billions of years, unlike dwarf galaxies, which have ...

This is called the “heat death” of the Universe, but you can think of it instead as the death of heat. There will be no more ...

Surrounded by glowing discs of swirling gas, quasars emit immense light that can be seen across vast cosmic distances.

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