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| | SEDS Messier Database |
 | | It was one of the first major milestones in the history of the discovery of Deep Sky objects, as it was the first more comprehensive and more reliable list: Only four objects were initially missing because of data reduction errors, which could be figured out later though. |
 | | The study of these objects by astronomers has led, and continues to lead, to important, incredible discoveries such as the life cycles of stars, the reality of galaxies as separate 'island universes,' and the possible age of the universe. |
 | | While Messier's catalog was the first major reliable collection of deep-sky showpieces, and without doubt the most famous and important, others have followed since, including similar collections suitable e.g. |
| seds.lpl.arizona.edu /messier (1103 words) |
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