Galactic position system
We can point to our home on a globe and find Earth in a model of the solar system but where are we in the Milky Way?
Beauty ≠ truth
Scientists prize elegant theories, but a taste for simplicity is a treacherous guide. And it doesn’t even look good
Our quantum problem
When the deepest theory we have seems to undermine science itself, some kind of collapse looks inevitable
Is this life real?
Philosophers and physicists say we might be living in a computer simulation, but how can we tell? And does it matter?
The calibrated cosmos
Is our universe fine-tuned for the existence of life – or does it just look that way from where we’re sitting?
Scientists used to scan the skies for messages from alien civilisations. Now they go looking for their ruins
If human history turns on the tilt of the multiverse, can we still trust our ideas of achievement, progress and morality?
The wait of the world
Ditching the leap second would mean decoupling clock time from the Earth’s rotation – from day and night itself
Planets in potato fields and asteroids in gravel: how a Maine highway illuminates the strange history of the solar system