Assertion: telescope's mirror | /r/HasProperty | eighteen 1.32-meter
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Source sentences:
text: The primary mirror of the JWST, the Optical Telescope Element, is composed of eighteen 1.32-meter (4.3 ft; 52 in) hexagonal mirror segments made of gold-plated beryllium which combine to create a 6.5-meter (21 ft; 260 in) diameter mirror that is considerably larger than the Hubble's 2.4-meter (7.9 ft; 94 in) mirror.