Blue Planet

When hunting Neptune, use high magnification and look for a tiny blue disc i a mere 2.3 arc seconds I across. Don't expect to see detail—the Hubble Space Telescope didn't when it took this photo in



Once known as George's Star, Uranus lies within a degree of Jupiter in mid-September. The two worlds are closest on September 18, when they are 48 arc minutes Oust over 3A degree) apart, close enough to be framed in a low-power telescope field. North is up in this chart.

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