The universe is full of strange ‘little red dots’. A new study shines light on their real nature

An artist’s impression of a little red dot in the early Universe, showing a bright, compact central source embedded within a faint host galaxy. Ruiyuan Guo & Xuheng Ding

In 2023, the James Webb Space Telescope revealed something strange: the distant reaches of the universe are filled with “little red dots” that astronomers still can’t quite explain.

But a new paper I coauthored, published today in Nature Astronomy, might have found the key to understanding their nature.