"Luna 02". NASA Science Solar System Exploration. Archived from the original on 26 April 2020. Retrieved 8 July 2019. Luna 2 (as it was renamed in 1963)...
"Luna 02". NASA Science Solar System Exploration. Archived from the original on 26 April 2020. Retrieved 8 July 2019. Luna 2 (as it was renamed in 1963)...