Video: NASA's guide to near-light-speed travel

So, you've just put the finishing touches on upgrades to your spaceship, and now it can fly at almost the speed of light. We're not quite sure how you pulled it off, but congratulations!

Mapping the early universe with NASA's Webb Telescope

Astronomers and engineers have designed telescopes, in part, to be "time travelers." The farther away an object is, the longer its light takes to reach Earth. Peering back in time is one reason why NASA's upcoming James Webb ...

Slow down: Reduced speed limits save lives in busy cities

Traffic accidents are the leading cause of non-natural deaths worldwide. Lower speed limits may help prevent accidents. But speed-reduction policies can be controversial and effects are not well documented.

How ecotourism can harm indigenous communities

Let's time travel to the post-COVID future. It's almost time for summer vacation and you're scrolling on your laptop looking for vacation ideas. Suddenly, an ad pops up from a travel agency: Join the environmentally conscious ...

Video: Can wormholes act like time machines?

Time travel into the past is a tricky thing. We know of no single law of physics that absolutely forbids it, and yet we can't find a way to do it, and if we could do it, the possibility opens up all sorts of uncomfortable ...

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