To select a watch face variant, long-press on the watch face, select the gear icon, and scroll and tap Lunar (moonlander mode), Stratos (space shuttle style) or Astro(naut attire).
To configure watch face options, long-press, select the gear icon, and select "date on" or "date off" (to display the date) and "digital on" or "digital off" (to display digital time).
Let's go to space!