Watch a star's entire lifecycle from molecular cloud to final remnant. Low-mass stars become white dwarfs, medium stars explode as supernovae leaving neutron stars, and the most massive collapse into black holes.
Stars evolve along tracks on the Hertzsprung-Russell diagram. Main sequence lifetime ∝ M⁻²·⁵ — massive stars burn bright and die young.
Adjust initial stellar mass. Watch the star evolve through main sequence, red giant, and final stages. Follow its track on the live HR diagram.
A star like our Sun will live about 10 billion years. A star 10× the Sun's mass will live only 20 million years — but shine 10,000× brighter. The most massive stars known are over 200 solar masses.