It's showtime for Pluto. NASA's New Horizons spacecraft has traveled 3 billion miles and is nearing the end of its nine-year journey to Pluto. Sunday, it begins photographing the mysterious, ...

We sent a probe on a one-way trip to Pluto, and it took nearly a decade. That mission, New Horizons, was a landmark achievement, finally giving us a complete photo album of the classical solar system.

Add Yahoo as a preferred source to see more of our stories on Google. On January 19, 2006, NASA launched a spacecraft to Pluto! New Horizons is a spacecraft about the size of a grand piano, and it ...