Gravitational waves (3D)
Two black holes orbit, merge and ring down: spacetime ripples as a spiral, the chirp signal h(t) runs live, a ring of test masses squeezes. GW150914 as preset, signal to listen to, exaggeration shown.
AstronomyTry itCollection
Astronomy and Cosmos Experience it live.
Planets, stars, black holes and space probes: the cosmos to explore.
6 VisuApps
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Life of stars (3D)
Hertzsprung–Russell diagram with two stars of equal age: mass decides luminosity, lifetime and fate. Red giant, planetary nebula, supernova, neutron star or black hole; colour computed from temperature.
AstronomyTry it
Expansion of the universe (3D)
Space itself stretches: from every galaxy all others recede (switch observer), measure the Hubble diagram yourself, light is stretched and reddened on its way. Time slider from the early universe into the future, a(t) with dark energy.
AstronomyTry it
Black hole — gravitational lens and shadow (3D)
Real-time ray tracing of a Schwarzschild black hole: the far side of the accretion disk appears as an arc above the shadow, and the shadow is 2.6 times the size of the horizon. With a no-curvature comparison, masses from 10 M☉ to M87*, and a falling probe that freezes at the horizon.
AstronomyTry it
Armillary sphere — the sky as rings (3D)
Horizon and meridian fixed, the celestial sphere turns about the axis tilted to the latitude, the sun runs along the ecliptic. Choose date, time and place: day arc, day length, noon altitude and declination update live — the seasons come from the tilt, not the distance. Exhibit-ready.
AstronomyTry it
Satellites live (3D)
More than 14,000 real satellites orbit the Earth live (CelesTrak orbital elements, SGP4) — time-lapse, filters by group, altitude and launch year, orbit and values for every object. Why the ISS needs 93 minutes and the GEO ring turns with the Earth.
AstronomyTry itCollections
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Molecular Biology
DNA, replication, transcription, translation and cell division as explorable 3D models.
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Perspective, ornament, structure and space: how art and architecture work with mathematics.
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Hyperloop, autonomous vehicles, warehouses and conveyors: logistics as interactive simulation.
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Heart, eye, voice, skeleton and nerves: the human body in 3D, layer by layer.
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Statistical Traps
Monty Hall, Simpson, Berkson and base rates: where intuition fails us with numbers.
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The Great Puzzles of Mathematics
Riemann, P vs NP, Poincaré and other great questions of mathematics, made tangible.
16 appsOpen collection
First Steps in Maths
Counting, arithmetic and shapes: maths for beginners, playful and clear.
6 appsOpen collectionNew ideas for your teaching.
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