Isaac Arthur on MSN

Faster-than-light travel sounded like a future breakthrough - until reality refused to cooperate

Faster-than-light travel has always sounded like the shortcut that would open the whole universe to us, but this video shows ...
Beeyond Ideas on MSN

Could Einstein’s theory of relativity let humans travel through time someday?

Imagine wearing a device that allows you to choose any year and visit it. While that remains science fiction, Einstein’s ...