On 24 April 2022, the United Nations Postal Administration (UNPA) will issue six stamps and three souvenir sheets to celebrate human achievements on Planet Mars.
As an inseparable celestial companion of Earth, Mars has been a source of curiosity for mankind since time immemorial. The space community has long strived to uncover the mysteries of Mars and has taken exceptional steps forward in 2021. In a historic year for exploration, three missions reached their destinations on and around the Red Planet. This stamp series celebrates those pioneering achievements.