When researchers finally cracked open the canisters from asteroid Bennu, they were not just sifting through dust. They were staring at a chemical time capsule packed with sugars, amino acids, salt ...

Far from being solid bullets of rock, many asteroids are fragile clusters of debris that spin so quickly they flirt with self ...

Space mining often sounds like a fast route to endless metals. In practice, the first question is simple: what are small ...