The Spitzer Space Telescope

The video discusses various telescopes, focusing on the Spitzer Space Telescope's infrared capabilities. Spitzer detects infrared images, revealing activities invisible in visible wavelengths. It orbits the sun, isolated from infrared radiation, and uses liquid helium to cool its detectors. Spitzer's infrared observations penetrate dust clouds, revealing star formation and a massive asteroid belt. These observations suggest prolonged periods of violent collisions in stellar systems. Despite running out of helium, Spitzer continues to function in a limited capacity.

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