Photography: NASA Image and Video Library (images.nasa.gov). NASA imagery is generally not subject to copyright in the United States.
Files were resized, cropped and recompressed with Pillow; all metadata was stripped. Each image ships as <name>.jpg (desktop) and <name>-m.jpg (mobile).

earth-night.jpg
  NASA ID: iss023e029061
  Title: Earth Observations taken by the Expedition 23 Crew
  Credit: NASA
  Center: JSC
  Date: 2010-04-28
  Source: https://images.nasa.gov/details/iss023e029061

clean-room.jpg
  NASA ID: PIA24536
  Title: SWOT Science Payload
  Credit: NASA/JPL-Caltech
  Center: JPL
  Date: 2021-06-30
  Source: https://images.nasa.gov/details/PIA24536

pad-dawn.jpg
  NASA ID: 2010-4738
  Title: 2010-4738
  Credit: NASA
  Center: KSC
  Date: 2010-09-21
  Source: https://images.nasa.gov/details/2010-4738

ground-station.jpg
  NASA ID: PIA25136
  Title: A New Antenna for NASA's Deep Space Network
  Credit: NASA/JPL-Caltech
  Center: JPL
  Date: 2022-03-16
  Source: https://images.nasa.gov/details/PIA25136

fairing.jpg
  NASA ID: PIA24134
  Title: Sentinel-6 Michael Freilich Spacecraft Team and Fairing
  Credit: NASA/Randy Beaudoin
  Center: JPL
  Date: 2020-11-05
  Source: https://images.nasa.gov/details/PIA24134

rocket-pad.jpg
  NASA ID: KSC-20191218-PH-FMX01_0001
  Title: OFT Starliner/Atlas V Roll to Pad
  Credit: NASA/Frank Michaux
  Center: KSC
  Date: 2019-12-18
  Source: https://images.nasa.gov/details/KSC-20191218-PH-FMX01_0001


data-center.jpg
  NASA ID: GSFC_20171208_Archive_e002030
  Title: Discover Supercomputer 3
  Credit: NASA/Pat Izzo
  Center: GSFC
  Date: 2017-12-08
  Source: https://images.nasa.gov/details/GSFC_20171208_Archive_e002030

earth-limb.jpg
  NASA ID: iss028e007274
  Title: Earth Observation (the sun over the limb of the Earth, Expedition 28)
  Credit: NASA
  Center: JSC
  Date: 2011-06-11
  Source: https://images.nasa.gov/details/iss028e007274

star-field.jpg
  NASA ID: iss074e0521637
  Title: The Milky Way rises above Earth's atmospheric glow
  Credit: NASA/Chris Williams
  Center: JSC
  Date: 2026-04-13
  Source: https://images.nasa.gov/details/iss074e0521637
  Use: the dark mode backdrop, cropped to the star field, shown at a quarter strength. Desktop size only.