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Water waves travel back in time to retrace their ripples

Physics

Water waves travel back in time to retrace their ripples

Researchers have discovered that jolting waves can send them rippling back to where they came from like a movie in reverse

News

A flip clock reads 23:59:60

Space

Time for more 2016: leap second will be added to year's end

News

Carlo Rovelli

Physics

You can touch the heart of physics without doing the hard bits

Features

free will

Physics

Physics killed free will and time's flow. We need them back

Features

entanglement

Space

That's odd: Quantum entanglement mangles space and time

Features

Earth's core is two-and-a-half years younger than its crust

Earth

Earth's core is two-and-a-half years younger than its crust

News

Abramovic

Humans

Past, present, future: How do we deal with time?

CultureLab

Time might flow backwards as well as forwards from the big bang

Space

Time might flow backwards as well as forwards from the big bang

News

Can burping black holes reveal the true fabric of the universe?

Space

Can burping black holes reveal the true fabric of the universe?

Features

<em>Back to the Future</em>: Does physics of Marty's time travel add up?

Technology

Back to the Future: Does physics of Marty's time travel add up?

Today is 21 October 2015 – the date Marty McFly and Doc Brown travel to in Back to the Future Part II. Can we reconcile the films with reality?

News

Space

What came before the big bang?

Features

Physics

Why do we move forwards in time?

Features

Physics

What if … We discover we can see the future?

Features

�鶹��ý's best summer reading

CultureLab