Dark side of the moon
Like evangelists, astronauts travel far and return with glad tidings. But however high they ascend, they’re only human
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?
Embracing the void
The ancients had pyramids to tame the sky's mystery. We have Star Axis, a masterpiece forty years in the making
Scientists used to scan the skies for messages from alien civilisations. Now they go looking for their ruins
Catching the stars
Roger Angel is one of the world's most brilliant and audacious engineers. Could he design the next energy revolution?
Are we alone?
The universe seems to be bursting with planets, and this is profoundly important — but not in the way we might expect
Living in space was meant to be our next evolutionary step. What happened to the dream of the final frontier?
When we peer into the fog of the deep future what do we see – human extinction or a future among the stars?
The ache for immortality
The Voyager probes speed on with their messages of humility and greatness, strange memorials to a spacefaring age