Build your own system
Play with procedural parameters to generate your own stellar system.
Time dilation experiment
Play with how time flows "in galaxy" compared to the real world.
Star Mass/Luminosity/Radius
Visualise Ad Lumens's take on star population, in a (hopefully :-)) nice 3D visualisation.
Aspects gap spotter
Visualise potential gaps in Ad Lumens's aspects population, across the dynamic science tiers.
Galaxy star breakdown
Get a breakdown of stars per stellar class and life phase, in actual galaxies and using four simple parameters.
Planetary surface
3D representation of a random, seedable telluric/tectonic planet surface.
Star/satellite mass
What of kind satellite types can we expect around which types of stars?