2019年空间科学热点回眸

 回顾了2019年全球空间科学重要研究进展、美欧俄日等国家/地区最新重大发展战略以及新发射的空间科学重要任务平台，盘点了天基平台助力首次黑洞直接成像，宜居带系外行星的大气中存在水，“隼鸟2”号（Hayabusa 2）完成小行星采样，1年期双胞胎天地对比研究揭示人体空间适应性，美国明确在2024年前载人重返月球目标，俄罗斯计划分4个阶段开展月球综合探索与开发、至2040年全面建成月球基地，中国成功发射“太极一号”空间引力波探测技术实验卫星，美国成功发射“电离层探测器”（ICON）等重大成果和事件。

Hot topics review of space science in 2019

This paper reviews the important research progresses, major strategic adjustments of the United States, Europe, Russia, and Japan, and newly lunched space science missions in 2019. The contents include the followings. The space-based platform assisted the first direct imaging of a black hole; Hubble found water vapor on habitable-zone ing; Hayabusa 2 touch down asteroid Ryugu for sample retrieval; the Twins Study showed how human body could adapt to a multitude of changes created by spaceflight environment; the United States set the goal of resending astronauts to lunar surface by 2024; Russia divided its lunar program into 4 phases and planed to complete its development path of lunar base by 2024; China successfully launched Taiji-1 gravitational wave detection experimental satellite; and NASA launched ICON to study earth's ionosphere.