This architecture allows the telescope to peer through cosmic dust and observe objects that are extremely distant or cool, such as nascent planetary systems and the atmospheres of exoplanets. This sunshield keeps the instruments at temperatures below -370°F (-223°C), allowing them to detect the faint heat signatures of distant astronomical targets without interference from the telescope's own heat.
Saturn James Webb Telescope Hubble Sensitivity Comparison
5 meters, gathering light with a sensitivity roughly 100 times greater than that of Hubble. Webb has provided the sharpest infrared views of Saturn to date, revealing details invisible to other telescopes.
Since its debut in the summer of 2022, the James Webb Space Telescope has fundamentally altered humanity’s perception of the cosmos. 5 million kilometers from Earth, it operates in a cold, dark environment essential for detecting faint infrared signals.
Saturn James Webb Telescope Hubble Sensitivity Comparison
These discoveries are forcing astronomers to rethink the speed at which galaxies formed in the early universe. Unfolding a mirror of this size in the vacuum of space required flawless execution of hundreds of mechanisms.
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