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Look about one-third of the way up in the northeastern sky at about 9 p.m. this week to catch a glimpse of three galaxies: M31, M33 and our own Milky Way. The inset shows a telescopic view of M31, the Great Andromeda Galaxy.

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Jimmy Westlake: See 3 galaxies this week

What’s the farthest thing you can see without a telescope? Would you believe 15,000,000,000,000,000,000 miles on a clear night? That’s 15 quintillion miles!

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