2. They are the most intrinsically beautiful sights in the night sky - pairs of galaxies entwined in a dynamic gravitational embrace. Dozens are visible in a small telescope, and hundreds more have been imaged by Hubble. They also offer a glimpse into the future of the Milky Way galaxy in a few billion years. This month's article at Cosmic Pursuits: Dancing Galaxies
4. Alan Dyer reviews my favorite star map: the Interstellarum Deep-Sky Atlas
. Even on a cloudy night, it's a joy to flip through the pages of this detailed and beautiful work.
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