Life Cycle of Stars


  • Recommended Grade level:  9-12  *Activities are also adaptable for Astro 101
  • Estimated Time: one or two 50 minute sessions
  • Objective:  In this activity, students explore objects representing various stages of the stellar life cycle and uncover how these stages fit together into two related sequences: one for Sun-like stars (similar in mass to our Sun) and one for massive stars (more than 8–10 times the mass of our Sun).
  • Link to interactive:

  • Lesson plan and activity sheets: 
    • PBS Learning Media Link: 
    • Also posted below. For editable versions, please contact Pat Udomprasert: pudomprasert [at]

  • This interactive is powered by the open-source WWT web-engine. Source code can be accessed at:
This lesson activity was created in collaboration with WGBH and NASA's Universe of Learning.  The material contained in this product is based upon work supported by NASA under cooperative agreement award No. NNX16AD71A. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author and do not necessarily reflect the views of the National Aeronautics and Space Administration.



life_cycle_of_stars_instructor_guide.pdf88 KB
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slc_stages_and_transitions_answer_key_20201029.pdf93 KB