How telescopes work
7:53
How telescopes work
Apr 15, 2025
Khan AcademyMahesh Shenoy
Telescopes 101 - NASA Science
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How does a telescope actually work? While modern telescopes can get quite complicated, the premise is simple. Distant objects look small and faint bc the light from them is spreading out. A telescope collects a large area of that spread out light and refocuses it back to a smaller area, effectively giving you the vision of the object that you’d see with your eye if you were physical much closer than you actually are! It’s all basics optics and the physics of light #astronomy #space #science | Dr
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