Science
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Orbital Tactics
Defend Earth by creating orbiting clouds of bullets, using real orbital dynamics to place them where they do the most da…
Orbital Traversal
A relaxing 2D space game where you exploit or battle gravity and orbital physics, steering through a gravitational playg…
Orbiting
A tiny physics game where the goal is to keep a spacecraft orbiting a planet for as long as you can without crashing or…
Orca Grotto
A heartfelt personal Neocities fan page devoted to orcas, with fun facts, famous whales, orca movies, pictures, adoptabl…
Orcasound
A live-listening network of underwater hydrophones in the Salish Sea where anyone can tune in and help detect passing or…
Orchid Fever
Susan Orlean's 1995 New Yorker essay about John Laroche, a toothless, obsessive orchid poacher in the Florida swamps - t…
Organic Chemistry Data
An encyclopedic collection of reference data, resources, and links for organic chemists, curated by the ACS Division of…
Organic Origami
Goran Konjevod's gallery of origami folded from single sheets into undulating pleated shells, spirals and flowers, with…
Organic Syntheses
A free archive of peer-reviewed, independently checked procedures for making organic compounds, a long-running reference…
Origami Simulator
A real-time WebGL simulator that folds virtual paper along crease patterns, letting you explore origami mechanics and wa…
Origami Simulator
Watch any origami crease pattern fold itself in real time in 3D: slide the fold percentage, load classic models like the…
Origin Myth Map
An interactive world map of creation myths: browse how cultures explained the beginning of everything, from worlds wrest…
Orion Realms
A browser explorer of 220 real star systems, inspired by NASA visualization software, mixing actual astronomy data with…
Orion's Arm
A collaborative hard science fiction worldbuilding project running since 2000, an encyclopedia of the next 10,000 years…
Ornitographies by Xavi Bou
Photographer Xavi Bou stacks video frames of flying birds into single images, turning their flight paths into ribbons an…
Oscilight
A jam incremental game built on the idea that light is a wave, where you tune oscillations and amplitudes to grow your o…
Oughtred Society Archive of Collections
The Oughtred Society archive of slide rule collections, where members document hundreds of rules, calculators and instru…
Our Houseplants
A houseplant hub with care profiles for popular species from the African violet to the ZZ plant, covering light, waterin…
Our Lady of Radium
A free-to-stream concept album by gothic folk duo Charming Disaster about Marie Curie, radium and the elements, with son…
Our Permaculture Life
A collection of free permaculture resources from educator Morag Gamble on edible gardens, low-impact living and building…
Our Solar System
A visual overview of our local neighborhood in the Orion arm of the Milky Way, with the Sun, planets, and their moons la…
Our World
A 360-degree interactive documentary that follows farmers and communities in Africa who are regreening dry land, with im…
Our World in Data
A nonprofit research platform offering free data, charts, and articles on global problems like poverty, health, and clim…
Outerzone
A large collection of free vintage model aircraft plans to download, preserving classic designs for builders of flying m…
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