USTHB English Speakers Magazine USTHB English Speakers Magazine 1st Edition | Page 15

In addition, once in space, the
telescope will unfold segment
by segment, Webb’s mirrors
will appear, they are coated
with a super thin layer of gold
that is about 1000 atoms thick
to optimize their reflectivity
in the infrared domain. The
5 layer sun shield will start
extending to keep its mirror
and four science instruments
below 50 K.
Scientists all over the world
will be able to use Webb to
further into space and back
into time than ever before.
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