Lesson 5 image credits
Public domain:
Attribution:
Peter Trimming [CC BY 2.0 (https://creativecommons.org/licenses/by/2.0)]
Public domain:
Attribution
Auckland Museum [CC BY 4.0 (https://creativecommons.org/licenses/by/4.0)]
Public domain:
Attribution:
NACA (NASA)
Public domain:
Attribution:
Carl Albert Center [CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0)]
Public domain:
Attribution:
Kim Hansen [CC BY-SA 3.0 (https://creativecommons.org/licenses/by-sa/3.0)]