Science2 - 00039

Science2 - 00039 - Untitled | MOON | -| -| 2163 | -|...

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Untitled | MOON | ------ | ------ | 2163 | -- | |_________|_______________|____________|____________|____________| FIG. 27] [Illustration: ______________________________________ | | | STAR DISTANCES | |______________________________________| | | | DISTANCE IN | | STAR LIGHT-YEARS | | | | POLARIS 76 | | CAPELLA 49.4 | | RIGEL 466 | | SIRIUS 8.7 | | PROCYON 10.5 | | REGULUS 98.8 | | ARCTURUS 43.4 | | [ALPHA] CENTAURI 4.29 | | VEGA 34.7 | |______________________________________| | | | SMALLER MAGELLANIC CLOUD 32,600[A] | | GREAT CLUSTER IN HERCULES 108,600[A] | |______________________________________| [A] ESTIMATED FIG. 28 The above distances are merely approximate and are subject to further revision. A "light-year" is the distance that light, travelling at the rate of 186,000 miles per second, would cover in one year.] In this simple outline we have not touched on some of the more debatable questions that engage the attention of modern astronomers. Many of these questions have not yet passed the controversial stage; out of these will
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This note was uploaded on 10/05/2009 for the course MATH 205 taught by Professor Popescu,c during the Fall '08 term at UCSD.

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