SpaceSupermassive stars may have formed by repeatedly eating their siblings Some black holes are way bigger than we can explain, and they may have come from supermassive stars that formed by devouring the other stars around them News
SpaceQuantum weirdness could allow a person-sized wormhole to last forever We were unsure if wormholes could exist long enough to allow a person through. Now calculations indicate they are extremely rare, but could last the age of the universe News