James Webb vs. Hubble Telescope Mirror (IMAGE)

NASA/Goddard Space Flight Center

James Webb vs. Hubble Telescope Mirror

Caption

JWST will have a 6.6-meter (21.65 feet) diameter primary mirror, which would give it a significant larger collecting area than the mirrors available on the current generation of space telescopes. Hubble Space Telescope's mirror is a much smaller 2.4 meters (7.8 feet) in diameter.

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NASA

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