The atoms of space may be tiny, but could have huge effects.
If spacetime is made of atoms, as many theoretical physicists these days speculate, could we ever know? You might doubt it. Conventional wisdom says those atoms would be too small, too energetic, or just plain too weird. But Daniele Oriti thinks we have a shot. Oriti, an Italian theorist working at the Max Planck Institute […]
Here’s a talk I gave at the Centre for Quantum Technologies in Singapore on March 24, 2016. Note that it was the first time I’d given this particular talk and it had a couple of first-iteration glitches.
“Atoms” of space are too small to see, but betray themselves indirectly.
I’m fascinated by how the humblest observations can lead you to the profoundest conclusions, and here’s one I learned from Thanu Padmanabhan, an eminent theoretical physicist at the Inter-University Centre for Astronomy and Astrophysics in Pune, India. Suppose you cup your hands around a glass of cold water to warm it up. From this simple […]
Step one to understand the mysteries of black holes: build a big bathtub.
Don’t be alarmed, but there is a black hole in your bathtub. When you drain the tub, water converges on the plughole and speeds up, eventually flowing too fast for surface waves to propagate outwards. Those waves get swept down the drain like hapless astronauts falling into a black hole (see video at end of […]
How quantum correlations transcend space and time.
The great mystery of quantum mechanics is that particles can be connected without a connector. They can coordinate their behavior in ways that are too complicated to be preprogrammed into them, even though no process is acting across the distance between them. “We can’t say that one thing led to another,” Nicolas Gisin of the […]
A simple model of the phase transition that begat space.
Could space as we know it be just one possible phase of the universe, able to undergo a transition to or from an entirely alien structure? This video animation shows how that might happen, according to a model known as quantum graphity, developed by theoretical physicists Tomasz Konopka, Fotini Markopoulou, Lee Smolin, and others. (The […]
Here’s the sort of crazy idea that animates our office conversation at Scientific American. It all started with my colleague Michael Moyer’s joke that a certain politician could build his moon base using a balloon: just capture the hot air and float all the way up. Ha ha, we all know that balloons don’t work […]
Space shuttle Endeavour soars into space on its 16-day, STS-134 mission to the International Space Station.
Editor’s note: Updated at 12:15 P.M. KENNEDY SPACE CENTER—The space shuttle Endeavour took off on its final flight Monday morning at 8:56 A.M. Eastern time. The takeoff came after a nail-biting final hour as technicians had to do some last-minute repairs to the shuttle’s heat tiles and clouds filled the sky above Cape Canaveral. In […]