The Human Heart May Not Be Able to Handle the Trip to Mars

Anyone dreaming of casting off the shackles of Earth for the microgravity wasteland of Mars is in for some (more) bad news. In addition to a host of other problems, the necessary 18-month spaceflight would, apparently, lead to one very unhealthy (and spherical) astronaut heart. » 3/31/14 6:20pm 3/31/14 6:20pm

Would You Accept A One-Way Trip to a Colony on Mars?

Now that nuclear-thermal rockets are becoming a reality, we may very well be shipping off the first human pioneers to Mars (both safely and efficiently) in the not-too-distant future. This, of course, leaves the question of exactly who will become the first generation of Martian-Earthlings. » 4/02/13 1:40pm 4/02/13 1:40pm