Logo design: A. Faber

TULIPS helps visualize the physics of how stars evolve over time in an intuitive manner. Instead of complex diagrams, stars are represented as circles that change in size and color over time. I have been developing TULIPS since 2018 and plan to publish it as open-source and free software in the first half of 2021.

With the Outreach award of the Royal Holland Society of Sciences and Humanities, I am planning to further develop TULIPS and to make tutorials and videos of TULIPS available. Stay tuned!

Example TULIPS movie
Example TULIPS movie showing how a 10 solar mass star changes in size and in apparent color (as perceived by the human eye) over the course of its life. In the lower left corner, you can see a classical Hertzsprung-Russell diagram
Example TULIPS interior movie
Example TULIPS movie showing how a 10 solar mass star loses and generate energy over the course of its life. The radius of the circle is proportional to the mass of the star. Redder colors indicate a very high energy generation (for example through nuclear fusion) and more purple colors indicate heavy energy losses (for example through neutrino emission). In the lower left corner, you can see a classical Hertzsprung-Russell diagram.

For more information, have a look at a one-hour presentation I gave about TULIPS at a lunch seminar of the Anton Pannekoek Institute, University of Amsterdam: