We all know the Earth spins round and round, but did you know it's slowing down? Watch this video for the answer.
Learn more about how the earth rotates and revolves around the sun, which in turn moves around the galaxy.
Come up with questions about a topic and learn new vocabulary words to determine answers using an Ask, Answer, Learn table.
Even though there are now more than 7 billion people on Earth, we can't change the planet's orbit.