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doit_the_clown doit_the_clown
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7 years ago
What technique has allowed scientists to determine the relative sizes of Pluto and Charon?
A)   Imaging by the Voyager spacecraft in 1989
B)   Direct photography using adaptive-optics telescopes on the Earth in 1995
C)   Occultation of this planet by the Earth's Moon during the 1980s
D)   Eclipses of the planet's surface by its moon, Charon, during 1985–1990, viewed from the Earth
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Discovering the Universe

Discovering the Universe


Edition: 7th
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Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.

Albert Einstein
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papachulopapachulo
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7 years ago
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doit_the_clown Author
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7 years ago
This calls for a celebration Person Raising Both Hands in Celebration
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