検索キーワード： "PLUTO" 科学・テクノロジー

Did you know that Pluto has mountains, glaciers, and even blue skies? In July 2015, a spacecraft called New Horizons finally reached Pluto - almost 10 years after it had launched! The spacecraft flew by Pluto to take the first close-up photos of the dwarf planet. When it began sending those photos back to Earth, scientists were amazed by what they saw. Pluto was more fascinating than scientists ever imagined!

Did you hear? Pluto is not considered to be a planet anymore—but don’t worry, astronomists used scientific evidence to prove Pluto's demotion. Learn about the scientific method and how it allows scientists to reevaluate theories as new evidence emerges. What do you think Pluto should be classified as? Planet or Dwarf Planet?

This program features narration from the author. Hot diggity dog! Meet Pluto! The runt of a litter of eight planets. Pluto may not be the biggest or fastest planet to revolve around the Sun, but it has a unique story to tell. From the tale of how it was found by humans to its naming as a dwarf...

They're like major planets, but not quite. They circle around the sun. They're round. But they haven't cleared everything out of their path. Explore these unusual objects in this book about the dwarf planets.

Q: When is a planet not a planet? Scientists have argued for years over the answer to this question. And central to their debate has been Pluto, the tiny orb circling the Sun at the outermost reaches of our solar system. Then on August 24, 2006, a group of astronomers made a big announcement...