부산대학교 도서관

This is the nearest place to Earth where a single umbrella (called a sunshade) can protect the telescope from the heat of the Sun, Earth, and the Moon. Instead, we will push the telescope out near the Sun-Earth L2 Lagrange point, which you can find by extending the line from the Sun to Earth 930,000 miles (1.5 million kilometers) farther. FEATURES GLO:ast/01oct21:14n1.jpg PHOTO (COLOR): The James Webb Space Telescope will be protected from heat from the Sun and Earth by a sunshade, allowing the observatory to gaze deeper into the infrared sky than any previous telescope. Four projects are already under study by NASA: the far-infrared Origins Space Telescope, cooled to -452 F (-269 C, or 4 kelvins); the Lynx X-ray telescope, with much better mirrors and detectors than any of its predecessors; and the Habitable Exoplanet Observatory and Large UV/Optical/IR Surveyor telescopes, operating at near-ultraviolet, visible and near-infrared wavelengths, and optimized for directly imaging exoplanets. [Extracted from the article]