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.
Tereshkova heureka. The file was originally uploaded to Finnish by user Ravel Valentina Terekova tiedekeskus Heurekassa syyskuuta Valentina Tereshkova at science centre Heureka on September the th Ravel Mikko Tuomela Public Domain fi Finnish Ravel Valentina Tereshkova in
Page 2023 Free-images.com. All images are Public Domain