Scale of the Universe
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.
Interactive simulations to help you master physics concepts
"Somewhere, something incredible is waiting to be known."
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.
Investigate how orbital speed depends on the radius of orbit and the mass of the central body. Visualise circular orbits and understand satellite motion.
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.
Plot stars on the Hertzsprung–Russell diagram. Understand the relationship between luminosity, temperature, and stellar classification including the main sequence, giants, and white dwarfs.
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.