Scrub a five-stage evolutionary tour: protostar, core hydrogen burning, giant expansion, envelope ejection and compact remnant. A changing stellar cutaway sits beside a temperature–luminosity diagram. Compare initial masses and inspect how the illustrative branch changes.
• A real-time 3D scene with 5 inspectable parts (Evolving stellar envelope, Core and shell cutaway, Expanding expelled material, Temperature–luminosity diagram, Compact remnant), with home view, focus-selected-part, auto-rotate, expand, instrument-cover and hide-labels scene tools, plus a model response curve beneath the scene. • Experiment controls: Initial stellar mass (0.8-30 solar masses); Initial tour position (0-4.9 stage coordinate); Tour progression (0-0.3 stage/s); Massive-star remnant branch (Neutron star / Black hole); pause/resume, 0.1 s and 1 s single-step buttons, four playback speeds and a restart button. • Live readouts: Tour stage coordinate; Approximate main-sequence lifetime; Illustrative stellar radius; Illustrative surface temperature; Illustrative luminosity; Initial mass. • A Geometry & measurements tab with a parameter-comparison chart, a live-measurements chart, the model equations and snapshot readouts. • An Experiments tab with 3 guided presets (Sun-like life; Massive branch; Inspect envelope loss) and a Model verification bench that runs independent fresh models, plus a timestamped event log and a copyable trial report. • A Learn & assess tab with guided lessons, a knowledge-check quiz with reset and a written model-scope statement linking to a technical reference.
Approximate main sequence: L/L☉≈(M/M☉)^3.5; R/R☉≈(M/M☉)^0.8 tMS≈10(M/M☉)^−2.5 Gyr (rough scaling, not a stellar track) L/L☉=(R/R☉)²(T/5772K)^4 Five stage coordinates are pedagogical, not equal elapsed-time intervals
Piecewise representative teaching track, not a stellar-evolution solver. Giant and remnant values illustrate trends, not predictions. The 8 M☉ branch boundary is approximate; metallicity, rotation, binary interaction and mass loss affect real outcomes. Initial mass is not retained remnant mass. Remnant branch is selectable for massive stars. Black-hole radius/temperature/luminosity readouts are zero/not modeled; no black-hole thermodynamics.
No. The tour deliberately compresses vastly different physical timescales.
No. Mass loss, composition, rotation and binary history can change the outcome.
Piecewise representative teaching track, not a stellar-evolution solver. Giant and remnant values illustrate trends, not predictions. The 8 M☉ branch boundary is approximate; metallicity, rotation, binary interaction and mass loss affect real outcomes. Initial mass is not retained remnant mass. Remnant branch is selectable for massive stars. Black-hole radius/temperature/luminosity readouts are zero/not modeled; no black-hole thermodynamics.