Relativity
Mind-Bending Architecture Photos from a World Inspired by Escher
William Chyr's 'Manifold Garden' is like being inside a physics-defying piece of art.
Why We Need an Alternative History of the 20th Century
John Higgs's new book details the pivotal but underappreciated points in one of history's most important centuries.
The New Atomic Clock Will Be Accurate for 15 Billion Years
That's almost the age of the universe itself.
How the Master Clock Sets Time For The World
Getting it just right can take a while, and it starts right next to Joe Biden's house.
An Artist is Turning MC Escher's 'Relativity' Into a Video Game
Willy Chyr's video game, 'Relativity,' explores what one of Escher's worlds would feel like if you had to live in it.
The Careful Art of Watching Time Slow Down
Researchers again demonstrate the constancy of light-speed, and the flexibility of time.
Hunting Gravity Pure Enough for Einstein's Relativity
A pulsar and two white dwarves walk into a bar ...
Time Machine Cities: A Chat with Experimental Philosopher Jonathon Keats
We caught up Keats, whose latest exhibit merges relativity and time management.
Can Time Just Stop?
What if instead of a bang or whimper, the universe simply grinds to a halt? It's a real if highly speculative idea. It might not even be that much more unlikely than all of the other end-times scenarios you've heard about: grey goo, asteroid collision...