At relativistic speeds — that is near the speed of light — time moves more slowly, which would mean the electron beam wouldn't have enough time to spread out, keeping the beam focused.

Cameron Diaz at the Berlin premiere of "Back In Action." Getty Images for Netflix Cameron Diaz made a stunning return to the spotlight at the Berlin premiere of “Back in Action” on Wednesday ...

There are flashy smart home tools headed to store shelves this year, but those might not be the products that make the biggest splash in 2025. David lives in Brooklyn where he's spent more than a ...