美国新一代太空望远镜詹姆斯.韦伯(JWST)是美国宇航局(NASA)、欧空局(ESA)以及加拿大航天局(CSA)合作研制的大型优质太空望远镜,计划于2014年由阿里安5运载火箭发射到距地球150万公里的空间,围绕第二拉格朗日点(L2)的位置飞行。同哈勃望远镜相比,JWST更大、更精密,其口径是哈勃太空望远镜的三倍,但质量却只有哈勃的三分之 The United States next-generation space telescope JWST is a large-scale high-quality space telescope developed in collaboration with NASA, ESA and CSA and is scheduled to be launched in 2014 by the Allian 5 Launch Vehicle Launched into space of 1.5 million kilometers from Earth and flown around the location of the second Lagrange point (L2). Compared with the Hubble Space Telescope, JWST larger and more sophisticated, its caliber is three times the Hubble Space Telescope, but the quality is only one-third of Hubble