Since you’re reading a popular science website, there’s a very high chance you’ve heard of the twin paradox, but also that ...

BOULDER- Black holes, time travel and E= mc^2. They are all related to Albert Einstein's Theory of Relativity. How many of us, though, can actually explain any of it? This year, Einstein's theory ...

General relativity stands as one of the bedrock theories in modern physics. Its strange view of relative time and space has been confirmed by countless experimental and observational tests, from ...

Space is important to us and that’s why we're working to bring you top coverage of the industry and Florida launches. Journalism like this takes time and resources. Please support it with a ...

No audio available for this content. Image: GPS.gov Clocks are at the heart of GPS. Advances in space-qualified atomic clocks that kept time to within 10 nanoseconds over a day were a key development ...