Marsipedia is a field encyclopedia of Mars. It behaves like a small Wikipedia: articles, an atlas, survey plates, internal links, and numbered sources. The screening sheets are arithmetic on cited numbers. They are not for flight, medicine, or operations.
It is not affiliated with NASA, ESA, JAXA, or the Wikimedia Foundation. The name is a field book, not an official publication.
How to use it
Search matches titles, summaries, and aliases. Arrow keys move through the list, and Enter opens an article. The slash key focuses search. Random opens any article. Night is the desert log. Day is the bone sheet. The choice stays in this browser.
The survey plate on an article is the fact box. References are numbered in the text. What links here is built from the other articles, so the sheet stays tied together.
Pictures
Every figure is an original illustration. None of them is a spacecraft photograph. A few plates simplify a landform or make it steeper, brighter, or rounder than the real body. The measurements live in the sentences and the sources, not in the pictures.
Where the numbers come from
Planet and moon figures follow the NASA Goddard Mars Fact Sheet, updated 19 May 2025, unless a sentence names another page. Canyon and volcano descriptions also use NASA Science's Mars facts. The potential-biosignature wording follows NASA's 10 September 2025 release. Mission status is written for 26 September 2026: Curiosity was still driving, the Perseverance sample cache was still on Mars, and JAXA's MMX launch was still planned for 20 October 2026.
Mark
This sheet carries @suddenlyjon on X.