Webb telescope data confirm a supermassive black hole fleeing its galaxy, carving a 200,000 light-year wake of new stars.
New data from major dark-energy observatories suggest the universe may not expand forever after all. A Cornell physicist calculates that the cosmos is heading toward a dramatic reversal: after ...
So this one is one of those little cosmic events that doesn’t always steal the headlines—the Moon at perihelion. Basically, that’s just a fancy way of saying the Moon is at the closest point to the ...