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JWST will make ultra-deep near-infrared surveys of the Universe to see back 13.5 billion years to “First Light” which occurred 100 – 250 million years after the Big Bang when the first stars and galaxies formed. Its ability to observe very high redshifts will enable astronomers to study the faintest galaxies, observe stars forming within clouds of dust, determine how galaxies evolved, and search for exoplanets1,2. JWST is extremely sensitive to even small amounts of contamination, which can directly cause degradation to performance of the telescope, and impact the mission lifetime. Contamination control has been an essential focus of this mission since conception of the JWST observatory3. |
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