The claim: NASA discovered city lights on planet 7 trillion miles away. An April 14 Facebook video (direct link, ... Other versions of the post were also shared on Facebook.

The First City on Mars. Justin Hollander (Springer) SPACE travel holds a mystique for humanity that few other areas of exploration do, and, beyond the moon, Mars is seen as the next step.

Musk is particularly concerned with making sure the city looks cool, two other people said. ... Like Mr. Musk, many of SpaceX’s more than 12,000 employees believe in life on another planet, ...