世界上最大的空间望远镜

哈勃空间望远镜是以美国天文学家爱德温·哈勃为名，于1990年4月24日成功发射，位于地球的大气层之上的光学望远镜。

哈勃望远镜口径为2.4米，长度约16米，带有多种观测暗弱天体的仪器，在地面之上约640公里的轨道上环绕地球，巡视宇宙。由于它位于大气层之上，不像地面望远镜饱受大气湍流扰动的影响，极大地拓展了人们对宇宙的了解。 

The Hubble Space Telescope, named after the American astronomer Edwin Hubble, was successfully launched on April 24, 1990, and is an optical telescope located above the Earth's atmosphere.

The Hubble telescope has a diameter of 2.4 meters and a length of about 16 meters. It is equipped with a variety of instruments for observing faint celestial bodies. It orbits the earth on an orbit of about 640 kilometers above the ground to inspect the universe. Because it is located above the atmosphere, unlike ground-based telescopes that suffer from atmospheric turbulence, it greatly expands our understanding of the universe.