NASA's Chandra Observatory recently captured an X-ray image that helped identify a dramatic break in one of the galaxy's ...

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 ...