Vesta might be a shattered remnant of an early planet, not a failed one—forcing scientists to rethink how worlds begin.

When people believe that we have found life on other planets when we have not, we've lost more than public trust — we've lost our own direction.

About 800 million miles (1.2 billion kilometers) from Earth lies cloud-cloaked Titan, largest of Saturn's 146-strong retinue ...

For decades, scientists believed Vesta, one of the largest objects in our solar system's asteroid belt, wasn't just an ...