We know how the universe began. An event we call the Big Bang started it all about 13.8 billion years ago. How the universe ...

The team explores one of the greatest discoveries of modern astronomy - that our universe is expanding - and the new ...

We’ve grown up with the idea that the universe will expand forever, meaning the "cosmological constant" is positive. What if it's negative?

Travel back 390 million years after the big bang to the ancient Maisie's Galaxy in this stunning 3D visualization that showcases 5000 galaxies captured by the James Webb Space Telescope. It was ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. New results from the Dark Energy Spectroscopic Instrument (DESI) suggest that the unknown force ...

Cosmic inflation tries to describe one brief but crucial phase in the Big Bang that launched the universe onto its expansion course. Many textbooks and science educators have attempted to describe the ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. The powerful Euclid ...

No one knows what kicked off the Big Bang that eventually allowed the stars to begin forming. Adolf Schaller for STScI, CC BY How can a Big Bang have been the start of the universe, since intense ...

According to the equations that govern black holes, the larger one of these cosmic behemoths is the lower its average density ...

Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and Fundamental Forces from Imperial College London.View full profile Alfredo has a PhD in Astrophysics and a Master's in Quantum ...

While it's much smaller than the largest supermassive black holes detected, it's still a whopper considering how early in the history of the universe it appeared. An enormous black hole in the early ...

If ultimately true, the universe will reach its maximum size around 11 billion years from now. At that point, physics (and ...