An inexplicably hot, fast-growing cluster of galaxies in the early universe has scientists questioning theories of galactic ...

What are the mysterious dark matter and dark energy that seem to account for so much of our universe? Why is the universe expanding? For the past 30 years, most cosmologists have looked to the ...

Early 20th-century cosmology transitioned from galactic astronomy with Edwin Hubble's discovery of external galaxies and the universe's expansion, which Albert Einstein's general relativity later ...

While headlines around the world claimed that ancient galaxies discovered by the James Webb Space Telescope were "breaking" our understanding of the Big Bang, the truth is much more nuanced — and much ...

Researchers may have discovered a giant arc of galaxies that would challenge the standard model of cosmology. The team of astronomers believe that the arrangement of galaxies, which they’ve dubbed ...

A new study questions dark energy's role in the universe's acceleration, suggesting it may be weakening instead.

These remarks owe their existence to a suggestion of Dr R. Mullen of Science-Fiction Studies, who received a review copy of Cosmology Now (ed. Laurie John, Taplinger Publishing Co., 168p, $10.95) but ...