One hundred degrees might seem hot, when you’re sweating through your shirt in July—but on a cosmic scale it barely registers. The Sun itself is over 15 million degrees; and in a hottest-object ...

Since the launch of the James Webb Space Telescope (JWST) in 2021, astronomers have felt as if they have gained a "magnifying glass" to peer into the childhood of the universe.

Gamma-ray bursts (GRBs) are the most energetic and luminous explosions in the universe. However, they are fleeting and often ...

A surprising new study reveals that the first stars appeared in a pre-heated universe, challenging earlier ideas about early cosmic conditions.

In the 22 years since Kimi Eisele came to Tucson to get a master’s in geography from the UA, she’s accomplished more than most of us do in a lifetime. In 1998, she founded you are here: a journal of ...

The first-ever artificial intelligence simulation of the universe seems to work like the real thing -- and is almost as mysterious.Researchers reported the new simulation June 24 in the journal ...

Pfalzner's models show that interstellar objects — bodies ejected from other star systems — could be captured by these planet ...

On Wednesday, NASA’s Lucy mission got one step closer to investigating the enigmatic asteroids near Jupiter. This story, however, really began in another corner of the cosmos more than three decades ...

Astronomers report that they have detected the second most distant dusty, star-forming galaxy ever found in the universe -- born in the first one billion years after the Big Bang. It is the oldest ...

Forbes contributors publish independent expert analyses and insights. The Universe is out there, waiting for you to discover it. If there's one thing we've experimentally determined to be a constant ...

The fabric of expanding space as illustrated over cosmic time. One of the consequences of the expansion is that the farther away a galaxy is, the faster it appears to recede from us, and that the ...