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Sun-Earth Day is a joint educational program established in 2000 by NASA and ESA. The goal of the program is to popularize the knowledge about the Sun, and the way it influences life on Earth, among students and the public. [1] The day itself is mainly celebrated in the United States near the time of the spring equinox. However, the Sun-Earth ...
The James Webb Space Telescope (JWST) sunshield is a passive thermal control system deployed post-launch to shield the telescope and instrumentation from the light and heat of the Sun, Earth, and Moon. By keeping the telescope and instruments in permanent shadow, it allows them to cool to their design temperature of 40 kelvins (−233 °C; − ...
Most such proposals contemplate a blocking element at the Sun-Earth L1 Lagrangian point. Modern proposals are based on some form of distributed sunshade composed of lightweight transparent elements or inflatable "space bubbles" manufactured in space to reduce the cost of launching massive objects to space.
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[40] Chang'e 5 Service Module: Sun–Earth L 1: CNSA: Launched on 23 November 2020, arrived at L 1 halo orbit on 15 March 2021. James Webb Space Telescope (JWST) Sun–Earth L 2: NASA, ESA, CSA: Launched on 25 December 2021, arrived at L 2 point on 24 January 2022. Operational as of 2022. [41] Euclid: Sun–Earth L 2: ESA, NASA
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