In a tweet last month, astronaut Buzz Aldrin informed the world that he was responsible for taking the first ever selfie in space during the Gemini 12 mission in 1966. The mission took place from November 11-15 lasting 3 days, 22 hours and 34 minutes. The two-man crew included Aldrin and James Lovell Jr.

The mission was Aldrin’s first spaceflight. He would later become the second person to ever walk on the moon after Neil Armstrong on 21 July 1969.

Click here to see an interview with CNN about the memorable moment.