We know how the universe began. An event we call the Big Bang started it all about 13.8 billion years ago. How the universe ...

About a century ago, scientists were struggling to reconcile what seemed a contradiction in Albert Einstein’s theory of general relativity. Published in 1915, and already widely accepted worldwide by ...

A surprising new study reveals that the first stars appeared in a pre-heated universe, challenging earlier ideas about early cosmic conditions.

The universe is approaching the midpoint of its 33-billion-year lifespan, a Cornell physicist calculates with new data from ...

The universe exists because matter and antimatter are not good friends. Is there a scientific reason why the universe exists?

The universe may not have begun with the Big Bang as is generally thought but from the collapse of a massive black hole, a new theory suggests. That is to say this model of cosmology explains the ...

Findings from a new study into the cosmic "afterglow" may rewrite the history of the universe, according to researchers. This afterglow—the "cosmic microwave background" (CMB), the relic radiation ...

Antimatter, particles with opposite charge to their matter counterparts, was theoretically predicted and later experimentally confirmed, existing naturally due to charge conservation in particle ...

This article explores how our understanding of the universe has evolved—from the scale of everyday experience down to the ...

If you think a galaxy is big, compare it to the size of the Universe: it’s just a tiny dot which, together with a huge number ...