"Somewhere, something incredible is waiting to be known."

- Carl Sagan

Exam Board

Scale of the Universe

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Zoom from a human to the observable universe

A scroll-driven zoom journey through 10 stages of scale — from a person to the observable universe. Builds visceral intuition for astronomical distances and sizes.

Orbital Speed

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Explore how speed and radius govern orbits

Investigate how orbital speed depends on the radius of orbit and the mass of the central body. Visualise circular orbits and understand satellite motion.

Star Life Cycle

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Follow a star from birth to death

Trace the life cycle of stars of different masses — from nebula and protostar through main sequence to red giant, white dwarf, neutron star, or black hole.

HR Diagram

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Map stars by luminosity and temperature

Plot stars on the Hertzsprung–Russell diagram. Understand the relationship between luminosity, temperature, and stellar classification including the main sequence, giants, and white dwarfs.

Redshift

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Observe the expanding universe

Explore how light from distant galaxies is redshifted and what this tells us about the expansion of the universe. Understand the link between redshift, recessional velocity, and distance.