Stellar Lives: Evidence, Models, and Cosmic Extremes
Luisa F
Updated
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Purpose
Build a trustworthy explanation of the unseen universe. Then share it clearly with others.
Build and compare H-R diagrams. H-R diagrams show star brightness and color.
Model pressure, gravity, equilibrium, and stellar change. Equilibrium means forces stay balanced.
Calculate planet properties from transit and radial-velocity data. Then judge how likely habitability is.
Model spacetime curvature, calculate Schwarzschild radii, and predict how gravity bends light.
Revise reports and figures with class and expert feedback. Then guide younger visitors through stellar stations.
Learning goals
You can tell observations from predictions in H–R diagrams. H–R diagrams show stars by brightness and temperature. You can explain stellar population histories. You can compare pressure support and gravity across stellar masses. You can predict structural changes. You can calculate exoplanet radius, mass, and density using transit and radial-velocity data. You can model spacetime curvature. Spacetime curvature means how mass bends space and time. You can calculate Schwarzschild radii. You can predict gravitational light deflection. You can critique methods. You can show uncertainty. You can revise after class feedback. You can present clear scientific conclusions.
Products
You will build an H–R diagram and create charts showing stellar populations and evolution.
Make reproducible calculation records for stellar equilibrium, exoplanet properties, and extreme gravity models.
Write a revised science report explaining stellar processes, planet hosting, evidence, methods, and uncertainty.
Turn the same evidence into a clear public science story for younger visitors.
Create a stellar property station and give a short presentation during the H–R diagram tour.
Launch
Use temperature and luminosity data to place mystery stars on a shared H–R diagram. Compare star groups and mark patterns in color, brightness, size, and likely lifetime. Write an initial explanation of one star’s history, possible planets, and likely fate. Label each claim as an observation or prediction. An observation means something you can see in the data. A prediction means what you think may happen next. Then name one uncertainty. Ask: How can you build and share trustworthy explanations about places you cannot explore?
Exhibition
Lead a 20-minute “Find Your Place in the Universe” tour for visiting fifth- and sixth-graders. Guide visitors onto a giant H–R diagram. The H–R diagram is a graph of star brightness and temperature. Explain their star’s size, lifetime, and fate. Show whether their star may host planets. Use your calculations, charts, and stellar property station. Display your science report and figures. Visitors can trace your evidence. Answer questions and collect feedback from visitors, science professionals, and astronomy partners.