Add Yahoo as a preferred source to see more of our stories on Google. Scientists imagine virtual particles popping in and out of existence to explain how forces transfer between particles.

Subatomic particles, gravity wells and the beginning of the universe – these are difficult and mysterious concepts that are better understood with storytelling and metaphor. That's exactly theoretical ...

Amid the many mysteries of quantum physics, subatomic particles don't always follow the rules of the physical world. They can exist in two places at once, pass through solid barriers and even ...

"Hearst Magazines and AOL may earn commission or revenue on some items through these links." If there weren’t any planets, stars, comets, asteroids, or other cosmic debris flying around, there would ...