Interactive Space Lab
Three sandboxes built on real physics approximations. Drag the sliders and watch the universe react.
Orbital Mechanics Sandbox
Stable orbit
Star mass1.00 M☉
Orbital velocity1.00× v_circ
Orbit distance150.00 px
At 1.0× circular velocity the orbit is a circle. Below ~0.7× the planet spirals into the star; above ~1.41× it exceeds escape velocity and leaves the system.
Stellar Life Cycle Explorer
Carbon-Oxygen White Dwarf
Initial mass1.0 M☉
Main-sequence lifetime ≈ 10.0 billion yr
Protostar
→Main Sequence
→Red Giant
→Planetary Nebula
→White Dwarf
Ends by puffing off its envelope; electron degeneracy pressure holds the remnant up.
Exoplanet Light Curve Simulator
Depth 1.44%
Planet radius0.12 R★
Orbital period4.00 days
Impact parameter0.10
Transit depth scales with (R_planet / R_star)². A grazing transit (high impact parameter) produces a shallower, V-shaped dip — a classic false-positive signature for eclipsing binaries.