Asteroid Vesta, long considered a stalled protoplanet, may actually be a massive fragment of a larger world that once existed in our solar system. New findings based on gravity-field mapping and ...

NASA has spent decades obsessed with asteroids and for good reason. These ancient space rocks aren’t just debris; they’re ...

An alternate explanation that fits the evidence is that Vesta was once part of a planet – but which planet that might been ...

NASA’s Psyche mission to a $10,000 quadrillion metal asteroid hit a snag with thrust loss, but backup systems offer hope to ...