NASA

NASA @NASA

@_Crazycrit @NASAWebb As Webb is orbiting L2, it's also moving around the Sun. Since Webb can only point to roughly half the sky at any given moment because it can’t look in the direction of Earth & the Sun, this affords Webb access to the entire sky over the course of a year: https://t.co/Fv0KXtzKLS — PolitiTweet.org

NASA @NASA

@scottparnapy @NASAWebb The sunshield will allow the telescope to cool down to a temperature below 50 Kelvin (-370°F, or -223°C) by passively radiating its heat into space. @NASAWebb’s MIRI instrument uses a cryocooler to reach its significantly lower operating temperatures of -447°F (7 kelvins). — PolitiTweet.org