It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
This image was acquired from
Keywords from Image Description:
alan bean alanbean astronaut group astronautgroup bill anders billanders buzz aldrin buzzaldrin charles bassett charlesbassett charlie bassett charliebassett clifton williams cliftonwilliams dave scott davescott david scott davidscott donn eisele donneisele edwin aldrin edwinaldrin eugene cernan eugenecernan gene cernan genecernan
Page 2017 Free-images.com. All images are Public Domain