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| | Hale Telescope -- Encyclopædia Britannica |
 | | in full George Ellery Hale Telescope, one of the world's largest and most powerful reflecting telescopes, located at the Palomar Observatory, Mount Palomar, Calif. Having a diameter of 5 m (200 inches), it is second only to the 6-metre (236-inch) reflector of the Special Astrophysical Observatory, Zelenchukskaya, Russia. |
 | | one of the world's largest and most powerful reflecting telescopes, located at the Palomar Observatory, Mount Palomar, Calif. Having a diameter of 5 m (200 inches), it is second only to the 6-metre (236-inch) reflector of the Special Astrophysical Observatory, Zelenchukskaya, Russia. |
 | | Using a telescope on Mount Wilson, California, Edwin Hubble was able to prove that there are other galaxies in the universe. |
| www.britannica.com /eb/article-9038870?tocId=9038870 (861 words) |
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