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, ...

Far from our own solar system, astronomers have finally watched what planetary scientists have long predicted but never directly seen: two massive asteroids slamming into each other around another ...

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 ...