When the JWST began science observations in July 2022, it flung open a whole new window on the universe. The JWST looked ...

Compact ruddy galaxies seen by the James Webb telescope confound astronomers. Having very little spin at birth may explain the galaxies’ small sizes.

More information: V. Rusakov et al, JWST's little red dots: an emerging population of young, low-mass AGN cocooned in dense ionized gas, arXiv (2025). DOI: 10.48550/arxiv.2503.16595 Provided by ...

The early universe’s ‘Little Red Dots’ are still a big mystery. ... Instead, they make up one out of every five to 10 galaxies in the early cosmos, making them routine.

That means the red dot galaxies seem to consist of between 10 billion and 1 trillion stars crammed into a galaxy a few hundred light-years across with a volume 1,000 times smaller than the Milky Way.

A cosmic object spotted by the James Webb Space Telescope has flummoxed astronomers. Now, a research team has studied hundreds of these "little red dots" and found clues about their identity.