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Aeon is a registered charity committed to the spread of knowledge and a cosmopolitan worldview. Our mission is to create a sanctuary online for serious thinking.

No ads, no paywall, no clickbait – just thought-provoking ideas from the world’s leading thinkers, free to all. But we can’t do it without you.

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What is the shape of space?

4 minutes

Why the apparent flatness of space is an enduring cosmological mystery

Empty space isn’t ‘nothing’. Since Albert Einstein, scientists have known that space has distinct physical properties, giving it the ability to bend, ripple and expand. One of its most mysterious characteristics, however, is its apparent flatness, allowing objects travelling on parallel paths to continue on parallel paths unless acted upon by the gravitational force of another object – a feature of the Universe that appears to be ‘a gigantic, cosmic-level coincidence’. This brief animation probes our evolving understanding of space, brushing up against the edges of current human understanding.

Video by MinutePhysics and PHD Comics 

Video/Music

What happens when rock stardom doesn’t quite work out?

10 minutes

ORIGINAL
Video/Ethics

You messed up. You’re in trouble. But don’t worry, logical positivism can help

6 minutes

Video/Demography & Migration

On the US-Mexico border, loved ones on both sides can see each other but cannot touch

12 minutes

Idea/Space Exploration

To find aliens, we must think of life as we don’t know it

Ramin Skibba

Video/Mathematics

Going from A to B isn’t always a straight line – but it can be very good fun

2 minutes

Essay/Human Evolution

Sex makes babies

As far as we can tell, no other animal knows this. Did our understanding of baby-making change the course of human history?

Holly Dunsworth & Anne Buchanan

Video/Cosmology

We are born of supernovas – our spectacular and totally ordinary origin story

4 minutes

Idea/History of Science

The most wonderful words in science: ‘We have no idea… yet!’

Daniel Whiteson

Essay/Evolution

Aliens in our midst

The ctenophore’s brain suggests that, if evolution began again, intelligence would re-emerge because nature repeats itself

Douglas Fox