Visualisation
Black Hole
Fly to a Kerr black hole: light traced honestly from the equations
Special projects
Big standalone projects: visualisations of physics and geometry, tools for music and patterns, live data about the planet.
Visualisations
Physics and geometry you usually only meet as formulas.
Visualisation · 11 chapters
The Fourth Dimension
The tesseract and other 4D shapes: turn them and understand them
Visualisation
Night Sky
The sky above you right now: constellations, planets, Messier objects
Create
Tools for making music and patterns.
Data
The planet and the world in live numbers.
Data · 7 trackers
Living Planet
Earthquakes, the ISS, flights and volcanoes in real time
Data
Open Data
Exchange rates, crypto, weather and demographics: charts and downloads
Data · 118 elements
Periodic Table
Every element: properties, discovery and where it occurs
Living Planet
Seven trackers that update themselves: data from USGS, NASA, NOAA and open ADS-B networks.
- Earthquake Tracker Real-time earthquakes on a map: search, sensitivity zones and "I felt it" reports
- ISS Tracker ISS, Tiangong and Hubble live on a map with ground track, day-night terminator and pass predictions for your city
- Live Flight Tracker Live air-traffic map from ADS-B and OpenSky: flights, routes, tracks, search by flight number, airframe or airport, METAR/TAF weather and NOTAMs
- Near-Earth Asteroids Asteroid close approaches for the next 60 days: distance in lunar distances, size and speed from NASA/JPL data
- Space Weather & Aurora Kp index, geomagnetic storms, solar flares, solar wind and the aurora oval with a visibility estimate for your latitude
- Wildfire Map Active fire hotspots from the last 24 hours from NASA satellites on a map, the strongest fires and nearest cities
- Active Volcanoes Volcanoes with new and ongoing activity this week from the Smithsonian / USGS weekly volcanic activity report
The textbooks live in Courses.