Watch this video lesson to learn about the life cycle of stars and how mass can affect their life cycle. 

Watch this video to learn about Nuclear Fission and Nuclear Fusion!  We will review the concepts of nuclear fusion and fission and how to balance nuclear equations, including neutrons and positrons. 

Click on the link to enrich your learning of the Solar System by learning about the Big Bang and how it helped to develop the universe and everything in it 

Click on the link to continue your learning on gravity and its relationship to mass, distance, and motion in the universe!  This lesson is an interactive Learning Lab that will engage you in different learning styles as you watch, read, research, organize, and illustrate your way through learning!