Modern cosmology reveals a universe expanding uniformly without a spatial center or edge. The Big Bang wasn't a localized ...

As the universe expands, it feels like it must be spreading out from some initial point. But a physicist explains why that’s ...

Through the James Webb Space Telescope and the Hubble Telescope, it has been possible to confirm the expansion of 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 ...

Dark energy—the term used to describe whatever is causing the universe to expand at an increasing rate—is one of the universe ...

Mathematical quirks of our universe have led some cosmologists to wonder whether the cosmos was actually born in a black hole ...

Astronomers use many methods to determine this number, including gravitational lensing, the universe’s expansion rate, and more.

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