The Citation Space facts, properly cited.

The Citation

A living catalogue of space facts, the measurements behind them, and the debunks of the claims that don't survive contact with the data. Every card cites its sources - the thing the other side never does.

What this is

The Citation is a 134-card compendium of spaceflight facts, the measurements behind them, and the record against the claims that do not survive contact with either. Each card answers exactly one question - what a Saturn V actually threw, why the ISS does not fall, what the Apollo footage shows frame by frame - in a few hundred words you can read on a phone. The questions are mostly the ones flat-earthers ask; the answers are the ones their side skips.

What “properly cited” means here

Every card ends with a numbered source list: NASA mission pages and Open API records, peer-reviewed measurements, Wikimedia Commons files, published challenge parameters. The claims link to the documents; the photographs are checked by a human being against what the caption says they show, and weak metadata is rejected, not papered over. Where a card's subject wants a correction, the card gets corrected - publicly. No model wrote these cards and no feed posts them: a person wrote each one, and cites the receipts.

Start here

Read a path - Measure the Earth Yourself or See It with Your Own Eyes, curated sequences that build an argument in order - or search the collection. The same cards live inside Discord as ephemeral cards with cross-link buttons, shareable to any channel.

Picture of the day

Night on a Spooky Planet 2026-10-31

What spooky planet is this? Planet Earth on a dark and stormy night, of course. The ghostly scene was photographed at Hverir, a geothermally active area found along northeastern Iceland’s volcanic landscape.

Full picture and explanation →

Cards the collection leans on

The most-referenced cards in the cross-link graph - every link here is a card pointing at the evidence it builds on.

Card of the week

Perseverance — Spacecraft

Chosen by the calendar, rotated weekly, cited like everything else here.

The families

🚀 Spacecraft 25 cards The hardware that flew - Saturn V to Voyager, with the specs and the service history. 🔭 Science 36 cards The math and physics behind the headlines: orbits, tides, light, and why the sky is the way it is. 🔍 Debunks 16 cards Claims about space, answered with the record - what the photo actually shows. 🧪 Experiments 11 cards Cheap experiments you can run yourself, each one evidence of a spinning sphere. 📋 Case studies 6 cards Real-world tests of flat-earth claims: the prediction, the test, the result, the reaction. 👤 Notables 37 cards The people behind the work - including the ones the flat maps never name. 🎯 Challenges 3 cards Open challenges to flat-earthers: published parameters, escrowed prizes, zero takers. 🧭 Paths 2 curated sequences Guided reading orders - the collection's argument, start to finish.