![](https://www.pdfsearch.io/img/cc9f1f1ac9baaa6ea6b5bef08e33cef0.jpg) Date: 2015-12-23 10:21:23
| | College of Arts and Sciences Department of Astronomy 4005 McPherson Laboratory th 140 West 18 Avenue Columbus, OHAdd to Reading ListSource URL: science.nasa.govDownload Document from Source Website File Size: 287,94 KBShare Document on Facebook
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