What is the Star Lifecycle multi-solver?

Star Lifecycle is a guided workflow that chains 2 individual PolySim solvers into one end-to-end analysis, piping each result into the next step.

Yes. Every step runs entirely in your browser using real numerics — no install, no account, no cloud cost. Custom or private solver packs are available as a paid service.

Biology & Aerospace Pack · Multi-Solver

Star Lifecycle

H-R to fate. This multi-solver chains 2 solvers into a single guided workflow — run each step in order and carry the result forward.

Workflow steps

hr-diagram
→blackbody

or unlock everything with Pro →

H-R Diagram

open full solver →

Hertzsprung-Russell DiagramLive

the map of the stars

Controls

Presets

Your star temperature (K)

The H-R diagram plots stars by temperature and luminosity, revealing the main sequence (a diagonal band), red giants, supergiants, and white dwarfs. Your star (pink ring) sits on the main sequence where luminosity scales as T⁴.

▶ Run in Python

Data Inspector

Spectral classG

Luminosity1.00 L☉

Temperature5,778 K

Governing equation

\frac{L}{L _{⊙}} = (\frac{T}{T _{⊙}})^{4} = (\frac{5778}{5778})^{4} = 1.00

Reading this result: A cool orange K-type star: lower temperature places it low-right on the main sequence, dimmer and longer-lived than the Sun.

Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.

↓

Blackbody

open full solver →

Blackbody RadiationLive

Planck's law · Wien's displacement

Controls

Every warm object glows with a Planck spectrum. Heat it up and the peak shifts to shorter (bluer) wavelengths — that's why stars range from red to blue-white.

Presets

Temperature (K)

▶ Run in Python

Data Inspector

Temperature5778 K

Peak wavelength502 nm

Colorwhite/yellow

Governing equation

λ_{m a x} = \frac{b}{T} = \frac{2.898 \times 1 0 ^{6}}{5778} = 502 nm

Reading this result: At 5778 K the Planck curve peaks at 502 nm, inside the visible band — Wien's law makes peak wavelength ∝ 1/T, so doubling the temperature halves the peak wavelength and shifts the glow toward blue.

Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.

Need a private, branded version?

We build custom solvers and workflows for labs, firms, agencies, and courses — your parameters, your branding, your data.

Explore Custom Solver Sets →

More in the Biology & Aerospace pack

Epidemic Response Model Pharmacokinetics Suite Neuroscience Lab Population Ecology Lab Tumor Growth Cardiac Rhythm Vaccine Strategy Enzyme Pathway

Frequently asked questions

What is the Star Lifecycle multi-solver?: Star Lifecycle is a guided workflow that chains 2 individual PolySim solvers into one end-to-end analysis, piping each result into the next step.
Is it free to use?: Yes. Every step runs entirely in your browser using real numerics — no install, no account, no cloud cost. Custom or private solver packs are available as a paid service.