Galaxy Classification
Students drag galaxies into the correct Hubble classification zone using visible structural clues, then use the feedback to connect galaxy morphology with stellar…
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Earth & Space Sciences · Topic collection
Stars & the Universe interactive resources
Explore Stars & the Universe through 9 licensed Earth & Space Sciences simulations, guided investigations and challenges for classroom teaching.
Use Stars & the Universe with your class
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Available resources
Galaxy Type Visualizer
Students compare three-dimensional representations of the major galaxy types and inspect how shape, stellar population, gas content and star-formation behaviour…
HR Diagram Explorer
Students explore a star alongside its position on a Hertzsprung–Russell diagram, changing stellar mass and relating temperature, luminosity, radius and evolutionary…
Hydrostatic Equilibrium Simulator
Students alter stellar parameters such as core temperature, fusion support and opacity and observe whether inward gravity and outward pressure remain balanced. It shows…
Nuclear Fusion Core Simulator
Students vary stellar-core temperature, density and hydrogen content and observe changes in proton–proton fusion rate, energy output and pressure support. The full…
Redshift Explorer
Students move a galaxy through cosmological distance, compare rest and observed spectral lines, calculate redshift from the wavelength shift and connect recession…
Solar Layers Explorer
Students explore the layered structure of the Sun and compare the physical conditions and roles of the core, radiative zone, convective zone, photosphere, chromosphere…
Solar Magnetic Activity Simulator
Students manipulate solar magnetic activity and observe associated changes in sunspots, flares and solar-wind behaviour, linking magnetic-field complexity with changing…
Type Ia Supernova Distance Estimator
Students inspect a Type Ia supernova light curve, use its standardised luminosity and observed brightness to estimate distance, and test their result in a…