Astronomers have called into question the identity of the most distant star in the universe ever detected, Earendel, first spotted by NASA's Hubble Space Telescope in 2022. New research using the ...

That cosmologists cannot agree on one of the most elementary facts about the universe is striking enough. But that uncertainty produces others, too: it makes it impossible to calculate an exact age ...

The universe is expanding, and while that fact is fascinating, it also creates a question that trips people up: if […] ...