Clue for dark matter? In a nearby galaxy, a mysterious substance may be interacting with itself

A galaxy orbiting next to our own about 380,000 light-years from Earth could provide new clues in the 90-year search for the nature of dark matter, the invisible glue that holds galaxies together. The mysterious substance is responsible for more than 80% of the universe’s mass, but has yet to be directly detected. Scientists say … Read more