Elon Musk is revising his vision for SpaceX by shifting the company’s primary focus from colonizing Mars to building a city ...

Space exploration is among the most exciting frontiers for humankind. Developing knowledge about our solar system, galaxy and the possibility of humans becoming an interplanetary species are alluring ...

Space colonization is no longer the fodder of science fiction, it is becoming a reality. See more in Season 2, Episode 13, "Colonizing Space." ...

Elon Musk is putting his dreams of colonizing Mars on hold and said his SpaceX rocket company will instead focus on building a city on the moon.