![](https://www.pdfsearch.io/img/e5fe653cc8c759c52a79c72dae440256.jpg) Date: 2015-09-17 14:55:18
| | College of Arts and Sciences Department of Astronomy 4055 McPherson Laboratory th 140 West 18 Avenue Columbus, OHAdd to Reading ListSource URL: science.nasa.govDownload Document from Source Website File Size: 250,78 KBShare Document on Facebook
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