2020年深空探测热点回眸

 2020年国际深空探测事业稳步推进。回顾了2020年世界深空探测的工程成就和科学产出，评述了中国探月工程嫦娥五号采样返回任务以及嫦娥四号/三号的成果产出，对比了美国、中国和阿联酋3个火星探测任务，围绕在轨的35个深空任务梳理了包括太阳探测和行星科学的多项科学发现，讨论了深空探测发展的环境因素特别是新冠疫情的影响，并展望了全球2021年即将实施的深空探测任务。

Review of 2020 global deep space activities

The global deep space exploration endeavor was pushed forward steadily in 2020. In this article we review the outstanding engineering success and scientific output in the year, analyze the results of Chang'E 5 sampling return mission and Chang'E 3/4 missions in the Chinese Lunar Exploration Program, compare the main scientific goals and payloads of the three Mars missions by US, China and United Arab Emirates, and summarize the scientific findings about the sun and solar system given by the 35 deep space missions operating in orbit. We also review the scenario of future deep space exploration especially affected by the COVID-19 pandemic. We conclude the article with the prospect of future launches in 2021.