| lights(noun, light, brightness, gleam, illumination) |
| locus(noun, movement, track, path, orbit) |
| low tide(noun, nature, force, gravity) |
| low waters(noun, nature, force, gravity) |
| lunar(adjective, space, cosmos, galaxy, solar system) |
| movement(noun, track, path, orbit) |
| neap tide(noun, nature, force, gravity) |
| obliteration(noun, shade, obscure, dim, veil) |
| obscuration(noun, shade, obscure, dim, veil) |
| occultation(noun, shade, obscure, dim, veil) |
| orbit(noun, movement, track, path) |
| orbital speed(noun, nature, science, physics) |
| otherworldly(adjective, space, cosmos, galaxy, solar system) |
| path(noun, movement, track, orbit) |
| pattern(noun, movement, track, path, orbit) |
| penumbra(noun, shade, obscure, dim, veil) |
| perigee(noun, movement, track, path, orbit) |
| planetary(adjective, space, cosmos, galaxy, solar system) |
| radiance(noun, light, brightness, gleam, illumination) |
| radio astronomy(noun, nature, science, space, solar system) |