For a few months, a faint red dot in a James Webb Space Telescope image looked like it might be one of the first galaxies ever to form. Now astronomers say it's something far closer and far smaller. The object, nicknamed Capotauro, is a cold brown dwarf inside our own Milky Way.

Thousands of distant galaxies and a few bright foreground stars fill part of the James Webb Space Telescope CEERS deep survey of the Extended Groth Strip in near infrared light. Image: ESA/Webb, NASA, CSA, S. Finkelstein, M. Bagley, R. Larson, A. Pagan, CC BY 4.0, modified.