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Latest Articles
Is It Friday the 13th Again?
How our society defines years, months and weeks can seem frustratingly arbitrary. Can you bring order to our unruly calendar?
Quantum Gravity’s Time Problem
The effort to unify quantum mechanics and general relativity means reconciling totally different notions of time.
Solution: ‘Time Through an LCD Display’
Insights about time’s arrow from a liquid crystal universe.
Seeing Time Through a Liquid Crystal Display
What insights can an LCD display give us about time's arrow?
A Debate Over the Physics of Time
According to our best theories of physics, the universe is a fixed block where time only appears to pass.
Quantum Weirdness Now a Matter of Time
Bizarre quantum bonds connect distinct moments in time, suggesting that quantum links — not space-time — constitute the fundamental structure of the universe.
Time’s (Almost) Reversible Arrow
The irreversibility of time may be a clue as to what makes up the universe’s dark matter.
Time’s Arrow Traced to Quantum Source
A new theory explains the seemingly irreversible arrow of time while yielding insights into entropy, quantum computers, black holes, and the past-future divide.
Perpetual Motion Test Could Amend Theory of Time
A radical theory predicting the existence of “time crystals” — perpetual motion objects that break the symmetry of time — is being put to the test.