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- The sky was clear after a few days of rain and cloudy weather. Megrez and Polaris were easy to find; Giausar was just at the edge of visibility. We spent some time identifying Boötes and Corona Borealis. Mary saw two satellites cross past each other, and later noticed Cassiopeia in the northern sky just above the trees.
- Planetary nebula (Wikipedia)
A planetary nebula is a type of emission nebula consisting of an expanding, glowing shell of ionized gas ejected from red giant stars late in their lives.
