Summer heat won’t be felt by @NASAWebb telescope as it spends the next ~3months hanging in a freezing test chamber http://go.nasa.gov/2uKa9pl pic.twitter.com/V2OtGJDsLF
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How much of liquid nitrogen will be needed to perform the test campaign?
Actually, we're using liquid helium, since liquid nitrogen isn't cold enough!https://www.nasa.gov/feature/goddard/2017/nasas-apollo-era-test-chamber-now-james-webb-space-telescope-ready …