For years, popular culture has treated a human settlement on Mars as an almost inevitable next chapter, a matter of engineering and willpower rather than fundamental limits. Astrophysicist Neil ...

HOUSTON, Jan. 26, 2012 — -- A colony on the moon? Republican Presidential candidate Newt Gingrich floated the idea before a massive audience on Florida's space coast. Thousands lost jobs there ...

Biological limits A sustainable Mars colony will need to include raising children there, but childbirth would be very risky on Mars. (Courtesy: iStock/Denis Art) “It’s hard to say when exactly sending ...

While agencies promise that humans will soon walk on Mars, insiders suggest the timeline may be far less realistic than the public believes. Behind the optimism lies a web of political ambition, ...