According to the model, dark matter may have started as particles that were hot, light, massless, and fast. As the universe cooled, these particles became heavy, slow, and dark, becoming an invisible ...

The UC Davis department of physics and astronomy, together with the College of Letters and Science, will host a free reception and public lecture on Tuesday, Nov. 4 from 6 ...

The early universe was already warm before reionization, revealing that the first stars did not flicker on in an icy cosmos.

Where does the matter in our universe come from? It's a question that has puzzled scientists for generations, and one that physicist Nick Hutzler is determined ...

According to data from the Hubble and James Webb Space Telescopes, the origins of the free-flying photons in the early cosmic dawn were small dwarf galaxies that flared to life, clearing the fog of ...

Most cosmologists believe that these stars were the first large, free-floating structures to illuminate our universe, and that black holes appeared later. But some have proposed that it went the other ...

The first high-energy collisions between light nuclei at the Large Hadron Collider confirm the unusual 'bowling-pin' shape of neon nuclei and offer up a new tool to study the extreme state of matter ...

Scientists using NASA's James Webb Space Telescope now think the "little red dots" spotted in the early universe could be a new kind of space object. They call it a "black hole star." Credit: T.

Astronomers have a new explanation for mysterious "little red dots" observed in the early universe: Maybe they're not crowded star clusters that upend everything scientists know about galaxies. Maybe ...

Physicists at the University of Massachusetts Amherst have made a bold prediction: there is a more than 90% probability that our telescopes could witness a black hole explode within the next 10 years.

Artist’s impression of a black hole star (not to scale). Mysterious tiny pinpoints of light discovered at the dawn of the universe may be giant spheres of hot gas that are so dense they look like the ...