Proving Pluto's moons

Published: July 16, 2023, 5 a.m.

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Mars, Venus, and Mercury are evening objects near Regulus this week.

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Saturn's close to Sigma Aquarii.

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Jupiter and Uranus rise in the morning.

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Pluto's up all night. It's hard to see. Its five moons are even harder to see. Mathematics helped prove--at least to some people--that the first known Plutonian moon exists. It certainly wasn't distinct in the first pictures.

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