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2019
Collage Sources: NASA images, open source clip art
2018
Collage Sources: Astronauts, Korolev Crater, Gale Crater: NASA. Nets Clip cc3.0. Flags: Wiki cc3.0. Rink: wikipedia: File:US_Figure_Skating_Championships_2014.jpg cc3.0.
2017
Collage Sources: Saturn: NASA. Wreath: open source clip art.
