As companies like SpaceX and Virgin Galactic make waves in space tourism, how long does the rest of the world have to wait ...

A gesture associated with the Nazis has a surprising history. But in Germany, there was little doubt about its meaning.

Angry Astronaut and Nextbigfuture commenter are making the case that SpaceX and Elon Musk must switch to nuclear thermal rockets to colonize Mars. I will ...