Space

NASA's Groovy Concept Art for the Orbiting Cities of the Future

Not content with putting a man on the moon in 1969, the aeronautics agency once aimed to create an entire space-based neighborhood.

The Search for Extraterrestrial City Life

Astrophysicists suggest looking for the shimmering light of cities on far off planets

The Best and Worst of the World's Central Plazas and Squares

A pair of slideshows illuminating what makes a public gathering space work and what doesn't

Cities in Space

NASA's 1970s ideas for creating colonies between the Earth and the moon