The James Webb Space Telescope will give a glimpse of the earliest galaxies formed after the Big Bang — but only if the telescope is kept frigid. That’s why there’s a tennis court-sized sunshield.
(Image credit: NASA GSFC/CIL/Adriana Manrique Gutierrez)
Click here for original story, Why the most powerful space telescope ever needs to be kept really, really cold
Source: NPR Space News