Kim Kardashian has some serious competition from Buzz Aldrin. The astronaut touted “the first space selfie” on social media Thursday to commemorate his first ever spacewalk.

“Did you know I took the first space selfie during Gemini 12 mission in 1966? BEST SELFIE EVER,” he posted on Instagram.

Aldrin took his first spacewalk 49 years ago today –
an outing that lasted 5 hours and 30 minutes. NASA notes that Aldrin was the first astronaut to practice his spacewalking tasks underwater in a swimming pool. Later, in 1969, he would join Neil Armstrong in the first moon landing.

Related: Solar winds blamed for turning Mars into cold, barren place

Space selfies are now common practice for astronauts, such
as Scott Kelly, who recently broke the U.S. record for most days in space.