Mercury surface map.
Johns Hopkins Applied Physics Laboratory / Applied Coherent Technology Corporation.
Usage: Cite authors.
https://astrogeology.usgs.gov/
Mars surface map.
NASA / Jet Propulsion Lab.
Usage: NASA guidelines.
https://planetarymaps.usgs.gov/
Jupiter surface map.
NASA / Jet Propulsion Lab / Cassini Imaging Team.
Usage: NASA guidelines.
https://photojournal.jpl.nasa.gov/
Uranus surface map.
ESO / NASA.
Usage: Creative Commons Attribution 4.0 International License.
https://supernova.eso.org/
Earth surface map.
ESO / NASA.
Usage: Creative Commons Attribution 4.0 International License.
https://supernova.eso.org/
Neptune surface map.
ESO / NASA.
Usage: Creative Commons Attribution 4.0 International License.
https://supernova.eso.org/
Moon surface pap.
USGS Astrogeology Science Center.
Usage: Public Domain.
https://astrogeology.usgs.gov/
Mercury image.
NASA.
Usage: NASA guidelines.
https://www.nasa.gov/
Venus image from Mariner 10.
NASA.
Usage: NASA guidelines.
https://photojournal.jpl.nasa.gov/
Earth image.
NASA/Apollo 17 crew.
Usage: NASA guidelines.
https://www.nasa.gov/
Mars image.
ESA & MPS for OSIRIS Team.
Usage: CC BY-SA IGO 3.0.
https://www.esa.int/
Jupiter image.
NASA.
Usage: NASA guidelines.
https://www.nasa.gov/
Uranus image. NASA. Usage: NASA guidelines. https://www.nasa.gov/feature/jpl/what-uranus-cloud-tops-have-in-common-with-rotten-eggs
Neptune image.
ESA & MPS for OSIRIS Team.
Usage: NASA guidelines.
https://photojournal.jpl.nasa.gov/
Moon image.
NASA.
Usage: NASA guidelines.
https://eyes.nasa.gov/
Digital Dream font.
Jakob Fischer / pizzadude.dk.
License: Free for personal or commercial use, may not be redistributed, sold or modified.
https://www.1001fonts.com/
Kenney Space font.
Kenney Land.
License: Public Domain.
https://www.1001fonts.com/
Turret Road Extra Bold font.
Noponies.
License: SIL Open Font License (OFL), free for personal or commercial use.
https://www.1001fonts.com/