The creation of the universe has long puzzled scientists: how could it begin if time itself didn’t exist? The Big Bang marks ...

They observe for the first time the decay of baryons, particles that make up the majority of the matter in the observable ...

How old is the universe? Learn more about the age of the Universe, from it's explosive beginnings to how we on Earth can ...

The first-known observations of matter–antimatter asymmetry in a decaying composite subatomic particle that belongs to the ...

Instead of the big bang, some physicists have suggested that our universe may have come from a big bounce following another ...

A team of scientists is proposing a bold alternative to the Big Bang theory, suggesting that our universe may have formed ...

Physicists working at the CERN particle physics lab said they detected a slight but significant difference in how particles ...

However, the observable universe extends farther than 13.8 billion light-years in every direction because, for all the time space has existed, it’s also been expanding.

Cosmological models say the Big Bang produced equal matter and antimatter, which destroy each other on contact-so it's a ...

Scientists observe CP violation in baryons, a key clue in understanding why matter dominates the universe over antimatter.

A controversial theory suggests the observable universe is the result of matter rebounding after the collapse of a black hole in another parent universe.

Instead of the big bang, some physicists have suggested that our universe may have come from a big bounce following another ...