Okuma AnlamaSoru #11108
JWST: A New Window to the Cosmos
The James Webb Space Telescope (JWST), launched in late 2021, represents a monumental leap in observational astrophysics. Unlike the venerable Hubble Space Telescope, which observed primarily in visible and ultraviolet light, JWST is optimized for the infrared spectrum. This allows it to penetrate obscuring cosmic dust veils and capture the faint, redshifted light emitted by the earliest stars and galaxies that formed shortly after the Big Bang. Stationed at the second Lagrange point (L2), approximately 1.5 million kilometers from Earth, JWST is equipped with a five-layer tennis-court-sized sunshield to keep its instruments near absolute zero, ensuring thermal noise does not distort delicate readings. It can be inferred from the passage that the massive sunshield of the JWST is essential because ----.
- A)infrared detectors require extremely low temperatures to operate accurately without heat interference
- B)it prevents micrometeoroids from striking the telescope's optical mirrors
- C)it generates solar power to transmit radio signals back to Earth stations
- D)it reflects visible light towards distant planetary atmospheres
- E)it protects astronauts during scheduled spacewalk maintenance missions
Cevabı ve çözümü göster
Doğru cevap: A) infrared detectors require extremely low temperatures to operate accurately without heat interference
Çözüm: Parçanın son cümlesinde güneşliğin enstrümanları mutlak sıfıra yakın tutarak termal gürültünün ölçümleri bozmasını engellediği ifade edilmektedir. Doğru cevap A'dır.