Out of the limelight, theoretical physicists continue to seek a mathematical model that can explain the universe's particles and forces.

A massive collision of galaxies sparked by one traveling at a scarcely-believable 2 million mph (3.2 million km/h) has been ...

The stellar engine idea dates back to science fiction author Olaf Stapledon ... "Since about half the stars in our galaxy are ...

The Epoch of Reionization — the universe’s last major transition — may have happened earlier than previously thought.

Peculiar James Webb Space Telescope observations seem to show gargantuan black holes in the earliest moments of the universe.

Should art museums be showing art history? Or cultural history, which isn't the same thing? Getty and LACMA exhibitions give ...

Advanced alien races might get around the galaxy by piloting stars rather than spacecraft according to a new study.

To explore the galaxy and hunt for resources, intelligent aliens might need to turn their home stars into natural spaceships, ...

For a long time, astronomers believed galaxy formation followed a very specific model: cosmic gas collects in clumps, stars ...

Argonne National Laboratory scientists performed the most extensive simulation of the cosmos on Frontier supercomputer. What ...

Researchers used the Dark Energy Spectroscopic Instrument to map how nearly 6 million galaxies cluster across 11 billion years of cosmic history. Their observations line up with what Einstein's theory ...

The first-ever close-up of an extragalactic star looks different than expected and might give a view of what stars look like at the end of their lives.