M21 10 M20 M8 panstarrs

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<blockquote class="wp-embedded-content"><a href="https://www.astroblogs.nl/2013/07/01/messier-maandag-m21-piepjonge-sterrencluster/m21-10-m20-m8-panstarrs/">M21 10 M20 M8 panstarrs</a></blockquote>
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