NASA’s James Webb Space Telescope revealed mysterious “little red dots” that seem too bright and mature for their age. A new study suggests they may be black hole stars—giant hydrogen spheres powered by black holes—helping explain the rapid growth of early supermassive black holes.NASA’s James Webb Space Telescope revealed mysterious “little red dots” that seem too bright and mature for their age. A new study suggests they may be black hole stars—giant hydrogen spheres powered by black holes—helping explain the rapid growth of early supermassive black holes.