1·First of all, astronomers look for a star.
首先，天文学家要寻找一颗恒星。
2·Particle physicists and astronomers collaborate often.
粒子物理学家和天文学家经常合作。
3·In recent years, astronomers have found nearly 400 new planets with stars.
近年来，天文学家已经发现了近400颗新的有行星的恒星。
4·Now astronomers think it was a meteor that burned up high in the atmosphere.
现在天文学家认为那是一颗在高空燃烧的流星。
5·Knowing the width of Earth's orbit, the parallax shift lets astronomers calculate the distance.
知道了地球轨道的宽度，视差偏移可以让天文学家计算距离。