If we have excellent telescopes here on Earth, why is it so important to put telescopes like the Hubble Space Telescope into space? This MinutePhysics video explains the challenges of being an earthbound telescope, from daylight, to light pollution, to the weather, to the air itself.
Related reading: NASA’s James Webb Space Telescope, the successor to Hubble, slated to launch in October, 2018.Watch this next: The Hubble Space Telescope Reflects the Cosmos. Plus, the Giant Magellan Telescope in the Chilean desert, due for completion in 2025.
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