For more than a century, popular culture has promised that humanity will spread effortlessly across the Solar System, turning ...

You might be hearing about future plans to colonize Mars or establish a base on the moon, but these ideas are older than humankind's first forays out of the atmosphere. In fact there have been several ...

This article was originally published at The Conversation. The publication contributed the article to Space.com's Expert Voices: Op-Ed & Insights. At an internal staff briefing last week, acting NASA ...