A new theory for the origins of dark matter suggests that fast-moving, neutrino-like dark particles could have decoupled from ...

The standard model for how galaxies formed in the early universe predicted that the James Webb Space Telescope (JWST) would see dim signals from small, primitive galaxies. But data are not confirming ...

How confusing inevitability with reality built decades of paradox. What if general relativity never actually tells us that ...

A surprisingly mature spiral galaxy named Alaknanda has been spotted just 1.5 billion years after the Big Bang—far earlier ...

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to ...

The James Webb Space Telescope has discovered Alaknanda, a remarkably mature spiral galaxy existing just 1.5 billion years ...

When we think of the Big Bang, we think loud, hot, and bright. But was it followed by a colder, darker shadow? Five-sixths of the universe seems to be made up of a mysterious substance called “dark ...

Two fresh ideas are giving scientists new ways to think about how the universe’s hidden mass came to be. Together, they paint a richer picture of dark matter’s origins and how we might still discover ...

In the search to understand how the universe came to be, a new theory is rewriting the script. Instead of one massive, fiery birth like the Big Bang, this idea suggests the cosmos has been growing in ...

NASA's James Webb Space Telescope may have detected the universe's oldest Population III stars in galaxy LAP1-B, 13 billion light-years away.