The universe is expanding, and while that fact is fascinating, it also creates a question that trips people up: if it’s growing, what exactly is it expanding into? Our brains are used to picturing ...

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to [email protected]. What is the universe expanding into if it’s ...

Last time I wrote about new data that overturns the standard cosmological model. Before anyone starts dusting off their ...

The popular consensus among scientists is that the universe will continue expanding until the bitter end. A team of ...

The Big Bang theory has dominated our understanding of the universe’s origin for almost 100 years. It describes a moment when ...

If we look out at the distant galaxies in the Universe, particularly at great distances, we find that they’re all receding away from us: strong evidence that the Universe is expanding. But here on ...

If the findings prove correct, they could transform our understanding of the cosmos and its future. Instead of stretching endlessly, the universe might one day halt its growth and begin to contract—a ...

If there is an absolute law in the universe, it’s that nothing can travel faster than the speed of light. For science-fiction enthusiasts, that’s a bit depressing. Space is big, and while the speed of ...