The universe has plenty of hydrogen. So why is star formation collapsing?

Star formation across the universe has fallen dramatically over the past 4.5 billion years, but astronomers have uncovered a surprising twist: the supply of neutral hydrogen, a key ingredient for making stars, has barely declined [1].

Sources

1. sciencedaily.com · The universe has plenty of hydrogen. So why is star formation collapsing? Sep 3, 2026

This is the neutral brief the press writes once, for everyone, before each reader’s paper adds its own so-what. It links out; it does not republish. 1 article clustered.

Print your own paper