Space travel should by rights make for rocket-fuelled television, but documentaries on the subject too often veer into soul-numbing technobabble. That sad fate is happily avoided by the absorbing Once ...

Israeli astronaut Ilan Ramon had a question before going into space: How would he mark Sabbath, the Jewish day of rest, from orbit? Sabbath begins Friday at sunset and ends Saturday after sunset. But ...

Satellites never go straight up and out of the solar system — and for good reason. This documentary reveals the physics, the ...

Space elevators? Nuclear rockets? The future of space travel could look radically different. Imagine taking an elevator to space. Or blasting off in a nuclear rocket. That might sound like science ...

For decades, NASA has dreamed of building a rocket powerful enough to take humans to Mars - and now, that dream might finally come true. The agency is developing a nuclear-powered engine that could ...