中国首次火星探测任务发射成功纪念封设计

中国首次火星探测任务2016年1月经党中央、国务院批准立项，命名为“天问一号”。任务目标是通过一次发射，实现火星环绕、着陆和巡视探测，拉开了我国行星探测的帷幕。 2020年7月23日，在海南文昌航天发射场，用长征五号遥四运载火箭将天问一号探测器送入地火转移轨道。为此，特发行纪念封一枚。

China’s first Mars exploration mission was approved by the CPC Central Committee and State Council in January of 2016. The program is named as Tianwen-1, with an objective of realizing orbiting, landing and roving detection of Mars all by one mission. This serves as the first major milestone to China’s planetary exploration activities. Tianwen-1 spacecraft was launched into the Earth-Mars transfer orbit atop LM-5 Y4 launch vehicle in Wenchang Spacecraft Launch Site on 23rd, July 2020. A commemorative envelope is hereby specially commissioned to mark this mission.