First, the good news. Time travel isn't necessarily forbidden by the laws of physics. In fact, the mathematics underpinning Albert Einstein's theories of relativity offer up possibilities via the ...

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The space-time continuum has long fascinated people with even a mild interest in how the universe works. Even though I don’t always understand it, I love watching movies that play around with this ...

Whether space-time exists should neither be controversial nor even conceptually challenging, given the definitions of “space-time,” “events” and “instants.” The idea that space-time exists is no more ...

Most of today’s leading theoretical physicists have a shared perspective about what the next revolution in physics will look like. They think reconciling Albert Einstein’s general theory of relativity ...

Add Yahoo as a preferred source to see more of our stories on Google. Luckily for sci-fi writers, there's rarely any need to worry about backing up their ideas with facts. Over the years, they've come ...