When engineers at a control center in Turin, Italy, sent a faint radio signal into space, they set off a world-first experiment. The message reached NASA’s Double Asteroid Redirection Test spacecraft, ...

Lying between Mars and Jupiter is a massive ring of rock debris—the asteroid belt. Now thin, it’s fading away gradually. In a new study, planetary scientist Julio A. Fernández of Uruguay’s Universidad ...

Contrary to popular belief, ammonites, ancient marine mollusks, survived the asteroid impact that wiped out the dinosaurs. Recent fossil discoveries in Denmark indicate some ammonite species persisted ...