| 31. | Astronomer Milton Humason used Rayton's lens to observe star clusters beyond the Milky Way Galaxy.
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| 32. | Using this scheme, galaxies, star clusters and other large assemblages of objects have been simulated.
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| 33. | Turning to star clusters, in 1883 he completed a catalog of more than 400 nebulae.
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| 34. | The center of the Ursa Major star cluster is about 75 light years from Earth.
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| 35. | The system is part of star cluster NGC 1981.
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| 36. | Their glowing fire sticks became the Pleiades star cluster.
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| 37. | It is also a star in a star cluster.
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| 38. | Auriga, which lies along the plane of the Milky Way, is home to several star clusters.
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| 39. | Their transformation into the star cluster known as the Pleiades is the subject of varied myths.
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| 40. | In 1974 the Arecibo message was sent with a radio signal aimed at a star cluster.
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