Since childhood, we’ve been told gravity is the force that holds everything together — but what if that idea is incomplete, ...

Dissident scientists advocating a controversial theory of the universe are having a field day in the wake of NASA's Deep Impact comet collision earlier this month. Scientists promoting the Electric ...

The Big Bang theory has provided the most widely accepted basis of our understanding of the universe since it was first proposed by Georges Lemaitre in 1927. In short, it posits that all the matter in ...

Note: For a definition of unfamiliar terms, see our glossary. The fundamental particles of the universe that physicists have identified—electrons, neutrinos, quarks, and so on—are the "letters" of all ...

A team of researchers from the University of British Columbia, Canada, has proposed a radical new theory about the expansion of the universe. Scientists do not know exactly why the universe is ...

If you look across space with a telescope, you'll see countless galaxies, most of which host large central black holes, ...

Paul M. Sutter is an astrophysicist at SUNY Stony Brook and the Flatiron Institute, host of Ask a Spaceman and Space Radio, and author of How to Die in Space. He contributed this article to ...

Dark energy is one of the greatest mysteries of the universe. This mysterious force is thought to be accelerating the expansion of the cosmos. But a new study challenges this long-held belief. A team ...