Almost 10 years ago, a NASA spacecraft was able to take several photos of Pluto, known for decades as a planet before it was ...

Whether Pluto is ... vote on this word that’s not really part of our wheelhouse," he said, adding he voted against the de-classification. But turning our nine-planet solar system into eight ...

Anything that traveled a significant distance during that time—a planet or an asteroid, for example—would appear to move as the images ... Pluto is the only place in the solar system where ...

Flyby New Horizons Pluto Solar System Spacecraft Get the best tech ... explain why a common type in space is so uncommon on our planet. While Lunar Trailblazer's mission is no longer possible ...

And if you are still a Pluto ... the solar system is full of bodies, and some are large, and some are small. Some are in regular orbits, and some are not. Which we call “planets” and which ...

Credit: Frederic J Brown/AFP/Getty Images Mike Brown killed Pluto. He had his reasons. But the astronomer did not set out to reclassify the solar system’s ninth planet as a dwarf. Brown was ...

Astronomers spotted 139 new objects in our solar system ... a clearer picture of what lies beyond Neptune has always proven to be challenging for scientists. The still-mythical “Planet Nine ...