JWST’s 341 Little Red Dots

As of 2025, astronomers using the James Webb Space Telescope have identified 341 tiny, reddish objects nicknamed "little red dots," seen from about 0.6 to 1.6 billion years after the Big Bang (roughly 13.2 to 12.2 billion years ago). Researchers still argue over what they are because their observed properties do not cleanly match any single explanation, so their true nature remains uncertain.

Previous Fact Next Fact