What's up in

time

<p>Time isn’t just another dimension, argues Tim Maudlin. To make his case, he’s had to reinvent geometry.</p>
Q&A

A Defense of the Reality of Time

Time isn’t just another dimension, argues Tim Maudlin. To make his case, he’s had to reinvent geometry.

<p>There’s more than one good way to bring order to our unruly, seemingly arbitrary calendar.</p>
insights puzzle

Solution: ‘Friday the 13th’

There’s more than one good way to bring order to our unruly, seemingly arbitrary calendar.

<p>How our society defines years, months and weeks can seem frustratingly arbitrary. Can you bring order to our unruly calendar?</p>
insights puzzle

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?

<p>The effort to unify quantum mechanics and general relativity means reconciling totally different notions of time.</p>
Abstractions blog

Quantum Gravity’s Time Problem

The effort to unify quantum mechanics and general relativity means reconciling totally different notions of time.

<p>Insights about time’s arrow from a liquid crystal universe.</p>
insights puzzle

Solution: ‘Time Through an LCD Display’

Insights about time’s arrow from a liquid crystal universe.

<p>What insights can an LCD display give us about time&#8217;s arrow?</p>
insights puzzle

Seeing Time Through a Liquid Crystal Display

What insights can an LCD display give us about time’s arrow?

<p>According to our best theories of physics, the universe is a fixed block where time only appears to pass.</p>
cosmology

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.

<p>Bizarre quantum bonds connect distinct moments in time, suggesting that quantum links — not space-time — constitute the fundamental structure of the universe.</p>
Physics

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.

<p>The irreversibility of time may be a clue as to what makes up the universe’s dark matter.</p>
Quantized Columns

Time’s (Almost) Reversible Arrow

The irreversibility of time may be a clue as to what makes up the universe’s dark matter.