Planet Nine from Outer Space!

SCIENCE A planet larger than Earth could be hiding in the cold, dark depths of our solar system. SO EXCITING!!!! (Nat Geo News) What is a planet, anyway? Use our resources to find out. Teachers, scroll down for a quick list of key resources in our Teachers’ Toolkit. Discussion Ideas The good folks over at Caltech probably discovered a planet lurking in the “cold, dark … Continue reading Planet Nine from Outer Space!