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 ...

Imagine you wanted to know everything you could about the Universe. You'd want to find the answers to questions of all types, such as: What is the Universe made of? How big is the entire Universe? How ...

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

Science is advancing rapidly. We are eradicating diseases, venturing further into space and discovering a growing zoo of subatomic particles. But cosmology – which is trying to understand the ...

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 ...

The clearest pictures yet of the newborn cosmos strengthen the prevailing model of the universe but deepen a mystery about its expansion rate. Measurements of this rate, known as the Hubble constant, ...

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 ...

Cosmology has made huge strides as a physical science since Einstein proposed the first quantitative cosmological model in 1917 when even the nature of galaxies was unknown. On the one hand, cosmology ...

The scene was familiar from a dozen science-fiction novels, but this was no poorly pressurized dome on some airless future world. It was Denver International Airport in Colorado — a mile above sea ...