“[Webb] can actually detect the heat of a bumblebee on the surface of the Moon, if you could have bumblebees on the surface of the Moon.” - Dr. Matt Mountain 
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ICYMI: #NASAWebb scientists Dr. Heidi Hammel & Dr. Matt Mountain explained why Webb will be the *coolest* telescope ever... -393 degrees F or -236 degrees C cool, to be exact. 
Via @VICE: https://www.youtube.com/watch?v=pq_aV5hy7Bc …
More fun facts about Webb (thread) 
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"There are multiple layers [of the sunshield], and each layer reduces the amount of warmth that gets transferred… The SPF of the sunshield of Webb is about a million.” - Dr. Heidi Hammel
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On the smoothness of Webb's mirrors after polishing: “If you imagine a 6.5 meter [mirror] stretched across the Atlantic Ocean, the largest wave that we allowed is roughly about an inch.” - Dr. Matt Mountain
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Want to learn more about Webb? Here are answers to 10 frequently asked questions: https://go.nasa.gov/2PAeXfu Our launch is targeted for October 2021.
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Almost at absolute zero temperature
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"James Webb is the coolest", I didn't say it but it's hard to argue against.
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I’m willing to try… Other infrared space telescopes, including IRAS, ISO, and Spitzer, operated with instruments cooled by liquid helium to about 2 Kelvin or less. While
#JWST’s very cool in more ways than one, it is not the coolest space telescope ever. - Show replies
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The coolest telescope yet.... literally. XD
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Belle conception une belle histoire scientifique qui nous attends avec cette invention sur ces futurs découvertes
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Wasnt this meant to of launched in 2019?
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