Where the files in this folder come from (the Almanac's Earth view, almanac-earth.js).

earth-day-v1.webp
  NASA Earth Observatory, Blue Marble: Next Generation, July 2004, topography
  (world.topo.200407.3x5400x2700.jpg), Reto Stockli, NASA Goddard Space Flight
  Center. Public domain (NASA imagery). Resized to 2048x1024, WebP quality 75.
  https://science.nasa.gov/earth/earth-observatory/blue-marble-next-generation/

earth-night-v1.webp
  NASA Earth Observatory, Black Marble 2016 (BlackMarble_2016_01deg.jpg),
  Joshua Stevens / Miguel Roman, NASA. Public domain. Greyscale, 2048x1024,
  WebP quality 75.
  https://earthobservatory.nasa.gov/features/NightLights

moon-v1.webp
  NASA Scientific Visualization Studio, CGI Moon Kit (lroc_color_poles_1k.jpg),
  from the Lunar Reconnaissance Orbiter Camera. Public domain. Greyscale,
  1024x512, WebP quality 75.
  https://svs.gsfc.nasa.gov/4720

three-r186.min.js (three-LICENSE.txt)
  three.js r186, MIT License. Tree-shaken and minified; the build line is in
  the file's first comment.

satellite-7.1.0.min.js (satellite.js-LICENSE.txt)
  satellite.js 7.1.0, MIT License: SGP4/SDP4 only. The build line is in the
  file's first comment.
