Anyone who studies planetary formation would relish the opportunity to get a close-up look at an interstellar object. Sending a mission to one would undoubtedly yield a scientific payoff. There's a ...

On October 6 1995, at a scientific meeting in Florence, Italy, two Swiss astronomers made an announcement that would transform our understanding of the universe beyond our solar system. Michel Mayor ...

Two weeks ago, NASA smashed a spacecraft into a small asteroid called Dimorphos, which orbits a larger rock, Didymos. The mission is formally named the Double Asteroid Redirection Test, but you might ...