Our best model of the cosmos has a glaring mathematical problem, but we may have found an answer.

A fifth dimension could fit into general relativity after all—by using this one weird trick.

New observations from the James Webb Space Telescope have revealed fresh details about one of the most luminous known objects in the universe: the dust-shrouded quasar W2246−0526, seen just 1.2 ...

There are black holes that are too big to be born from the death of a star but aren’t quite supermassive either. There’s ...

The instrument is called DESI, the Dark Energy Spectroscopic Instrument, and its job is dull in the way that all great ...

Our universe appears flat—but this observation still leaves plenty of options for its true shape. In fact, our cosmos could ...