This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Sigma. Mercury Sigma spacecraft on display at the Astronaut Hall of Fame Titusville Florida Uploaded to the English by the authorTransferred from org en transferred to Commons by User Pline using de php CommonsHelper Original uploader was Fl at org en en Fl original upload log page en Sigma Fl bytes no Sigma