Such an exponential expansion may seem minor, but it is equivalent to a grape in the palm of your hand swelling to become ...

The universe suddenly looks a lot more crowded, thanks to a deep-sky census assembled from surveys taken by NASA’s Hubble Space Telescope and other observatories. Astronomers came to the surprising ...

Theorists have found that a “warm” version of cosmic inflation is consistent with known physics, linking it to the hunt for ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...

The observable universe contains so much matter and so many planets that, if it extends infinitely, identical copies of people could exist somewhere else.

Astronomers have unveiled a new catalog of massive galaxy clusters, revealing new insight on the evolution of the universe ...

WASHINGTON — Using data from NASA’s Wilkinson Microwave Anisotropy Probe (WMAP), scientists have identified an unexpected motion in distant galaxy clusters. The cause, they suggest, is the ...

Astronomers have discovered a colossal cosmic structure that’s so big it threatens to undermine our entire understanding of the universe. The Big Ring spans about 3% of the radius of the entire ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...

Astronomers have uncovered two extraordinary cosmic structures that are challenging long-held assumptions about the nature of ...

Just how large is the universe? The short answer is 93 billion light-years — at least. That 93 billion light-year number refers to what astronomers call the observable universe, and it extends about ...