How do supermassive black holes, as seen in this illustration, get so big? Shutterstock/Sahara Prince
The earliest known black hole in the universe has been spotted by the James Webb Space Telescope (JWST), and it could tell us about the origin of supermassive black holes that formed much later.
Many galaxies have a supermassive black hole at their centre, but it is unclear exactly how they became so large. One possibility is they were formed by small black holes, created by early stars collapsing, joining together over time. Another suggestion is they are …
