a: ground-based telescope ~
b: view from the bottom of a swimming pool


"Hubble is in space because it can see the universe more clearly than we can from Earth. Looking at the heavens through a ground-based telescope is like trying to identify someone at poolside from the bottom of a swimming pool. Our vision is blurred because we live at the bottom of Earth's
atmosphere, an ocean of air that smears and scatters starlight. That's why stars twinkle."

Writer: Not Stated
Date: Dec 6 2016 5:56 PM

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