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Welcome to Asteroid Challenge, Target: Earth on SpaceClass!

This lesson places students in the midst of a challenge to save Earth from Apophis, a real asteroid that could be on a collision course with our planet. Students learn about the composition, history and orbits of asteroids; and they decide how to deal with Apophis. Dr. Neil deGrasse Tyson, director of New York City's Hayden Planetarium, guides students on this adventure.



Novice Astronomer Lesson:


(Recommended for lower grades)

Expert Astronomer Lesson:


(Recommended for higher grades)




Classroom Extension Activities