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欧洲空间局发射的“盖亚”卫星以前所未有的精度,对银河系内数以十亿计的恒星进行观测,测量它们的位置、距离和运动。这颗颠覆性的卫星观测效率比同样是由欧洲发射的前任依巴谷卫星高出数百万倍。天体测量学主要关注对恒星位置和距离的测量。通过长期测量可以觉察到这些恒星在星系中的运动。通俗地说,天体测量就像是给天空绘制地图。但即便是使用地球上最强大的望远镜,但星光在进入地球大
With unprecedented precision, the Gaia satellite launched by the European Space Agency has observed billions of stars in the Milky Way and measured their position, distance and movement. This disruptive satellite is observed millions of times more efficient than the former Iba Valley satellite, also launched in Europe. Astrometry focuses on the measurement of the star’s position and distance. The long-term measurement of these stars in the galaxy can be observed in the movement. In a nutshell, astrometry is like mapping the sky. But even using the most powerful telescope on the planet, the stars are entering the Earth