Telescopes 101 - NASA Science
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Telescopes 101 - NASA Science
Astronomers observe distant cosmic objects using telescopes that employ mirrors and lenses to gather and focus light.
Sep 22, 2020
Shorts
A comet from another star system is back in view and it’s rewriting the rules. ☄️ 3I/ATLAS is only the third known interstellar comet to ever visit our solar system. Discovered in July 2025, it’s tearing through space at 57 km per second with a strange red glow, unique chemistry, and intense dust jets unlike anything we've seen. Scientists believe it could carry clues about planets and maybe even life beyond our Sun. As it re-emerges from behind the Sun, telescopes around the world are ready. Th
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A comet from another star system is back in view and it’s rewriting the rules. ☄️
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