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To Establish the Scale of the Solar System, We Need

Question 19

Multiple Choice

To establish the scale of the solar system, we need to measure the distance to one object orbiting the Sun. Venus was first used for this purpose, but in the 1930's astronomers organized an international campaign to measure the distance to:


A) Mars
B) the Moon
C) the asteroid Eros
D) Pluto because of its great distance from the Sun
E) Mercury
Section 19.2: Surveying the Stars

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