If you're feeling that weird cocktail of guilt, fear, and "how do I even talk about this?"—welcome to the club.

Some solitary planets wander through interstellar space, offering unexpected surprises about their formation and evolution. Astronomers recently observed a particularly remarkable case in ...

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 ...