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Technicians have successfully tested our @NASAWebb telescope's Deployable Tower Assembly. Once in space, the tower will deploy to separate electronics & propulsion systems from the mirrors and sensors, which need to be very cold to perform optimal science: https://go.nasa.gov/2UpWfa6 pic.twitter.com/IJputrXpX8
And we got it all on camera! This new video shows how Webb's deployable tower will slowly extend 48 inches (1.2 meters) after launch to help it to cool down.
#NASAWebb was designed to look for extremely faint traces of infrared light. To do this it must be kept very cold.pic.twitter.com/Z2rqEvSzdo
Amazing !!
I cant wait to begin watching shows that will go into the new things this telescope will see 
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