SPECIALLY SELECTED TIMELINE
As of January 8, 2021 | Total satellite number is 6,250 (47% are dead but still in orbit)
Turnaround time record between two launches: 27 days
People that reached at least 100km in altitude
Average orbital distance
In 6 Apollo missions between 1969-1972
Sojourner (1997), Spirit (2004), Opportunity (2004), Curiosity (2012) and Perseverance (2021)