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General Relativity

Analysis and Comment (4)

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Hyper-drives might be the stuff of science fiction, but they could be science fact too. 20th Century Fox

Warp drives and reality: new hope for a Galactic Empire?

Fans of science fiction must be disheartened when introduced to Einstein’s Special Theory of Relativity. Dreams of galactic empires, criss-crossed by roguish princesses and beautiful smugglers, go out…
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We know they're out there, and now we're closer than ever to finding gravity waves. NASA

Gravity waves, scientists wave back: squeezing light beyond quantum limit

Detecting gravity waves is a major goal for astrophysicists. We know they should be there, but we haven’t found them yet. But today we are one step closer. By literally squeezing light on a quantum level…
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The universe teems with energy and matter we don't understand. stuant63/Flickr

Adventures in the dark side of cosmology

In questioning the fundamental nature of the universe, cosmology regularly grabs the public’s attention. But in an era in which we are observing deeper and more widely than ever before, our knowledge…
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Time travel has long been a staple of science fiction but the LHC might make it a reality. Fabrice Coffrini/AFP

Is the Large Hadron Collider a time machine?

Switzerland’s Large Hadron Collider (LHC) can be called a time machine in one sense: it enables us to examine conditions as they were during the universe’s early stages. But is the 27km-long particle…