Cyclic cosmology, or the big bounce, is the idea that the universe will eventually crunch back together and then go through another big bang. Columnist Leah Crane finds that, appropriately, it’s ...

Sep 4, 2006 · Cosmologists study the universe as a whole: its birth, growth, shape, size and eventual fate. The vast scale of the universe became clear in the 1920s when Edwin Hubble proved …

Cosmology grapples with the nature of the entire universe, seeking to understand its origins and its ultimate fate. Cosmologists study the mysteries of dark matter, dark energy and even the nature ...

With the results, the DESI collaboration sent ripples through the cosmology community. Dark energy, a mysterious force pushing the universe apart, might not be the constant we long thought it was.

Sep 21, 2016 · Space Reality guide: The essential laws of cosmology Our expanding universe began in a big bang 13.8 billion years ago. But what underlying laws of nature shape our vision of time and …

Mar 2, 2026 · Space A crisis in cosmology may mean hidden dimensions really exist Physicists are scrambling to understand why dark energy is weakening. In a surprising twist, we must now …

Jun 16, 2025 · Physics The radical idea that space-time remembers could upend cosmology There are new hints that the fabric of space-time may be made of "memory cells" that record the whole history …

Feb 16, 2026 · The big bang wasn’t the start of everything, but it has been impossible to see what came before. Now a new kind of cosmology is lifting the veil on the beginning of time

Jan 19, 2026 · The first second of the universe was, without a doubt, the most eventful in all of history. The universe started small. Infinitely small, in fact, if you subscribe to big bang cosmology, which ...

Dec 17, 2025 · Columnist and Space Cosmology’s Great Debate began a century ago – and is still going Our understanding of the true nature of the cosmos relies on measurements of its expansion, but ...