Given how unfathomably large the universe is, it is perhaps understandable that we haven’t yet cracked all its secrets. But there are actually some pretty basic features, ones we used to think we ...

Dark-energy evidence suggests the universe will end in a “big crunch” roughly 20 billion years from now. The universe is nearing the halfway point of what may be a 33-billion-year lifespan, according ...

A controversial new theory about how the universe began rejects the widely-held belief that it started with a giant cosmic eruption known as the Big Bang. One scientist suggests that the cosmos grew ...

In the beginning, the Universe was created. This has made a lot of people very angry and been widely regarded as a bad move.—Douglas Adams, The Hitchhiker's Guide to the Galaxy Humans have many ...

Some of the earliest galaxies found with JWST are also the brightest. That's a problem for our ideas about the universe. When you purchase through links on our site, we may earn an affiliate ...

According to the equations that govern black holes, the larger one of these cosmic behemoths is the lower its average density – given that the universe contains a lot of relatively empty space, could ...

It's a plot device beloved by science fiction: our entire universe might be a simulation running on some advanced ...

Sandro Tacchella does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...

Everything we see around us, from the ground beneath our feet to the most remote galaxies, is made of matter. For scientists, that has long posed a problem: According to physicists’ best current ...

For decades, almost every scientist has agreed that the universe began in an enormous explosion known as the Big Bang. But one group of researchers now controversially claims that everything we think ...