Study suggests that small black holes born in early universe may have left behind hollow planetoids and microscopic tunnels.

The search for dark matter, one of the greatest mysteries of the universe, has taken a surprising turn. A groundbreaking new ...

An illustration of small primordial black holes. In reality, such tiny black holes would have a difficult time forming the accretion disks that make them visible here. Photo: NASA Primordial black ...

When you think of black holes, you probably imagine massive stars collapsing under their own gravity. But scientists have ...