Not too long ago, most people on Earth could look up at night and see the Milky Way's stunning ribbon of stars. But if you live in a modern city or suburb awash in light pollution, that dazzling view of the night sky is about as rare as a wild predator sighting.
Thierry Cohen imagines the gorgeous side of a Revolution-style blackout with his pictures of cities that have gone completely dark. When the lights go out, brilliant stars are visible over New York, San Francisco, Tokyo, and Rio de Janeiro.
Sark is a tiny, car-free island in the English Channel that didn't fully get rid of feudalism until 2008. Its nights are so reliably dark that it's just been named the world's first "dark sky island", making the island one giant observatory for looking up at the night sky without any light pollution to get in the way.
The most massive 3D map of the night sky has been released. It contains a trillion pixels and would require 500,000 high-definition TVs to view in its entirety. These images represent just the tiniest fraction of the full map.