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 ...

Not long ago, I was at the observatory in front of a telescope, staring at the spectrum of a quasar on the screen, and the ...

When you bake a loaf of bread or a batch of muffins, you put the dough into a pan. As the dough bakes in the oven, it expands into the baking pan. Any chocolate chips or blueberries in the muffin ...

In the grand puzzle of the cosmos, one question continues to defy easy answers: how fast is the universe expanding? Astronomers have tried two main methods to figure it out, but their numbers don’t ...

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