Space telescope’s ‘golden eye’ opens, last major hurdle
The final part of the 21-foot mirror swung into place Saturday at flight controllers’ command, completing the unfolding of the James Webb Space Telescope.
Webb is so big that it had to be folded orgami-style to fit in the rocket that soared from South America two weeks ago.
Its tennis court-size sunshield unfurled earlier in the week, providing subzero shade for the mirror and science instruments.
More powerful than the Hubble Space Telescope, the $10 billion Webb will scan the cosmos for infrared light from the first stars and galaxies formed 13.7 billion years ago.