After the Big Bang, the Universe entered a long, dark period before the first stars formed. During this era, hydrogen emitted a faint radio signal that still echoes today. New simulations show this ...

Dark stars powered by dark matter may explain bright galaxies, massive black holes, and mysterious red objects in the early universe.

After nearly a century of chasing a shadow, physicists are staring at a new signal that looks uncannily like the long‑sought fingerprint of dark matter. The claim is bold: for the first time, a ...

Hints that dark matter might be destroying itself have flickered through astronomical data for more than a decade, but a new analysis claims the clearest signal yet of that violent process. Instead of ...

A promising lead about the nature of elusive dark matter may have just dried up. A mysterious abundance of gamma-rays — the highest-energy light in the universe — at the Milky Way's center is likely ...

The universe is packed with riddles, but few are as stubborn or as fascinating as dark matter. First proposed in 1933 by astronomer Fritz Zwicky, this elusive substance refuses to play by the rules: ...

The original version of this story appeared in Quanta Magazine. The end is brutal for electrons hurtling at 99.9999999 percent of the speed of light through SLAC National Accelerator Laboratory’s ...