1:B - Scientists think that there are a whopping 200 billion trillion stars. That’s the number of stars in our galaxy, the Milky Way (about 100 billion), multiplied by the number of galaxies (about 2 ...

Magnets can pull objects closer or push them away without even touching. This video explains why magnets attract and repel, and how magnetic poles and fields make this possible. A simple and clear ...

Nick discovers a way to steer their magnetic canoe around magnetic rocks. In Magnetic Fields, every red and blue object is magnetic. Nick and Sally learn how to use this knowledge to help them steer ...