Ever wonder why Pluto isn't considered a planet? Or how large the Earth is compared to the other inner planets? Explore the universe with a series of projects that simulate different aspects of our solar system. The activities require...

Has the solar system always been like it is today? A lesson presentation begins with a discussion of the formation of our solar system. It continues with a compare and contrast of the inner and outer planets. 

Scientists discovered the first exoplanet in 1995 and by early 2018, they confirmed the existence of more than 3,700—that's a lot of data! As part of the PBS 9-12 Space series, scholars interpret data about exoplanets. They compare...

There's more to that glowing ball of light in sky than most children realize. From the overall structure of the solar system, to the changing of the seasons, these hands-on lessons open the eyes of young scientists to...

To gain an understanding of the significance of Galileo Galilei's revolutionary ideas, class members watch the short video "Stargazing Before Galileo," and conduct a close reading of Galileo's Sidereal Messsenger. They then...