The enormous ‘El Gordo’ cluster of galaxies suggests that dark matter is colliding with itself

Strange behavior in a huge cluster of merging galaxies could be explained if dark matter, the universe’s most mysterious stuff, can collide with itself. However, the most favored model of cosmology at the moment is the Cold Dark Matter (CDM) model – and it suggests that dark matter, which is effectively invisible because it does … Read more

Could a telescope ever see the beginning of time? An astronomer explains

Curious Kids is a series for children of all ages. If you have a question that you would like an expert to answer, please send it to Curiouskidsus@theconversation.com. If the James Webb telescope were ten times more powerful, could we see the beginning of time? – Sam H., age 12, Prosper, Texas The James Webb … Read more

Could a telescope ever see the beginning of time? An astronomer explains

Curious Kids is a series for children of all ages. If you have a question that you would like an expert to answer, please send it to Curiouskidsus@theconversation.com. If the James Webb telescope were ten times more powerful, could we see the beginning of time? – Sam H., age 12, Prosper, Texas The James Webb … Read more

James Webb Space Telescope finds dwarf galaxies with enough power to reshape the entire early universe

Astronomers have used the James Webb Space Telescope (JWST) and predicted an effect by Albert Einstein more than 100 years ago to discover that small galaxies packed a huge punch in the early cosmos, forming the entire universe when it was less than 1 billion years old. The international team found that the galaxies, which … Read more

Were monstrous black holes or galaxies first? The James Webb Space Telescope may have a surprising answer

“Which came first: the galaxy or its monstrous black hole?” Technically, it’s an even older riddle than the chicken or the egg, even though we only became aware of it relatively recently. And according to new research, scientists may finally have an answer. It has long been believed that supermassive black holes that existed close … Read more