Licences
This page
The page code and text are released under the MIT licence.
Typeface
Recursive, by Arrow Type and the Recursive Project Authors, under the SIL Open Font License 1.1. It is served from this site. Read the licence.
Tonight's Moon
Worked out in your browser with the low-precision Moon formula of the Astronomical Almanac and the U.S. Naval Observatory's approximate solar coordinates.
The four labs
Each lab lists its own sources and licences on its own pages.