The great Space Race of the 1960s spurred a lot of speculation about what space exploration would look like. Here's what the ...

To travel between solar systems, a spacecraft would need extremely sophisticated – if not impossible – technology.

Where are all the aliens? No, I don’t mean microbes on Mars or creatures swimming beneath the ice crusts of Europa or Enceladus, but honest-to-God intelligent aliens, capable of space travel? The ...

Space elevators remain one of the most fascinating space concepts because they suggest a future where reaching orbit no longer depends entirely on expensive rocket launches. Interest in space elevator ...