Is there a scientific reason why the universe exists? In other words, what is the science of why there is anything at all, ...

If the laws of physics are completely symmetric between matter and antimatter, how did our Universe come to be?

“There’s a lot of meanings for ‘small,’” says Janet Conrad, a particle physicist at the Massachusetts Institute of Technology ...

Have you ever wondered how many atoms are in the observable universe? The math has been done, and here is the closest answer.

A new particle detector has passed a crucial test, demonstrating it's ready to start investigating quark-gluon plasma, the ...

What do quarks, electrons, and photons have in common? They’re all part of the Standard Model - the theory that helped ...

A physicist argues that many mysteries start to clear up once you accept that there is just one thing — the universe itself.

Any cosmic particle that travels through the Universe, regardless of speed or energy, must contend with the existence of the particles left over from the Big Bang.

But knowing how big the observable universe is doesn't tell us everything we know about how many atoms are in it. We also need to know how much matter, or stuff, is in it.