This is the type of study that helped to direct comet hunters where to search.
DON MACHHOLZ
Hits: 62
Mars will be closest to the earth on October 6, when it will be 39 million miles from the United States, and 62 million...
“Well, I’m an astronomer, and to me a beautiful sunset sky has no clouds at all.”Don Machholz Podcast-98-Map-1-Evening-SkyDownload Podcast-98-Map-2-Morning-SkyDownload Podcast-98-Map-3-M52Download
Podcast-15-Map-1Download Podcast-15-Map-2Download Podcast-15-Map-3Download Podcast-15-Map-4Download Hits: 116