- 54009 1440x900 communication, blue background, scheme
- 12514 1440x900 polar bears, communication, animals
- 104053 1440x900 galaxy cluster, gravity, communication
- 6057 1440x900 earth, planet, communication
- 11269 1440x900 penguins, three, communication
- 30737 1440x900 computer code, screen, communication
- 17387 1440x900 person, schemes, plexus