Science
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21 Hours on the Moon
Relive the 21 hours Armstrong and Aldrin spent on the lunar surface during Apollo 11 through panoramas, photo galleries,…
24/192 Music Downloads Are Very Silly Indeed
A clear, classic explainer from a Xiph audio engineer on the limits of human hearing, sampling and bit depth, and why 24…
252mya.earth
A to-scale scrolling timeline of the last 252 million years where one pixel equals 10,000 years, so all of recorded huma…
29-year-old Conway conjecture settled
A math blog post explaining how two Finnish researchers found a finite Game of Life pattern that can only arise from its…
2D Coulomb Gas Simulator
A WebGPU simulator of a two-dimensional Coulomb gas, where charged particles repel one another and settle into patterns…
2D PID Controller Simulation
Click to fly a physically simulated ball with thrusters steered by a PID controller, and tune the gains and wind to see…
2D Rigid Body Collision Resolution
An interactive blog series on how games make objects bump and bounce, with live demos you can drag and throw as you lear…
2in1 Oscilloscope
An online oscilloscope with built-in waveform generators, so you can synthesize signals and watch their traces right in…
3 Billion Years
An interactive visual timeline that scrolls through three billion years of Earth's history, from the earliest life to th…
3 Quarks Daily
A curated intellectual blog surfacing interesting writing on science, philosophy, art, and literature, with original ess…
30DayMapChallenge
Home of the #30DayMapChallenge, where mapmakers make one themed map a day every November, with the daily themes, collect…
365tomorrows
A new piece of flash science fiction every day since 2005, with thousands of free short stories about robots, aliens, st…
3Blue1Brown
Grant Sanderson's home for visual mathematics, with animated lessons and interactive articles on linear algebra, calculu…
3D ISS Tracker
A 3D globe that tracks the International Space Station in near real time, with live video from orbit and a layer of near…
3D Map with Sun Position
An interactive 3D terrain map that shows where the sun sits for any place, date and time of day, with cloud cover overla…
3D Packing for 3D Printing
A write-up on a program that packs many 3D models into the smallest possible volume for 3D printing, with images of the…
3D Solar System Explorer
A browser-based 3D solar system you can fly around, with adjustable time speed, camera follow on each planet and glowing…
3D Solar System Simulation
An interactive 3D simulation of the Solar System with elliptical orbits, real planet textures and adjustable rotation sp…
41 Days
A minimalist pandemic simulator where you draw quarantine lines in real time to stop a virus from spreading across the m…
4D
A PuzzleScript puzzle game about discovering diverse directions, where you move through a fourth dimension in tiny pixel…
4D Polytope Viewer
An interactive viewer for four-dimensional shapes: spin tesseracts, 120-cells, 600-cells and hundreds of other 4D polyto…
4D Toys
An interactive toy box of shapes from a fourth spatial dimension that you can poke, throw and roll, powered by a 4D phys…
4K Rivers
A series of vivid river and delta images built from high-resolution elevation data, where ancient meanders and oxbows gl…
5 Mysterious Structures from the World's Smallest Architects
Macro photographer Nicky Bay shows five baffling structures built by tiny rainforest creatures, from the log-cabin cases…
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