As my arms lift from my sides, and the rest of my body follows suit toward the ceiling of a modified Boeing 727—next to scientists, astronauts, engineers and activists—I think, “How did I get here?” I ...

We've all had dreams of being up in space and experiencing the freedom of zero gravity, no longer bound by the strange force that keeps us stuck on the ground. But this experience is limited to the ...

As plans for missions to Mars accelerate, so do questions about how the human body might cope. A return trip to the red planet would give more than enough time for someone to become pregnant and even ...