What was different about the results of the Mariner 4 and Mariner 9 missions to Mars? a Mariner 4 arrived at a time when Mars was much warmer and had abundant liquid water, but the planet froze by the time Mariner 9 arrived. b Mariner 9 found evidence of ancient Martian geologic activity and flowing water that hadn't been seen by Mariner 4. c Mariner 4 arrived when Mars was far from the Sun and very cold, but Mariner 9 photographed a much warmer Mars, because it was now twice as close to the Sun. d Although planetary scientists had their hopes raised by Mariner 4's pictures, they were dashed when Mariner 9 showed an always-geologically-dead planet.
What was different about the results of the Mariner 4 and Mariner 9 missions to Mars? a Mariner 4 arrived at a time when Mars was much warmer and had abundant liquid water, but the planet froze by the time Mariner 9 arrived. b Mariner 9 found evidence of ancient Martian geologic activity and flowing water that hadn't been seen by Mariner 4. c Mariner 4 arrived when Mars was far from the Sun and very cold, but Mariner 9 photographed a much warmer Mars, because it was now twice as close to the Sun. d Although planetary scientists had their hopes raised by Mariner 4's pictures, they were dashed when Mariner 9 showed an always-geologically-dead planet.
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
Problem 1LR
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What was different about the results of the Mariner 4 and Mariner 9 missions to Mars?
a Mariner 4 arrived at a time when Mars was much warmer and had abundant liquid water, but the planet froze by the time Mariner 9 arrived.
b Mariner 9 found evidence of ancient Martian geologic activity and flowing water that hadn't been seen by Mariner 4.
c Mariner 4 arrived when Mars was far from the Sun and very cold, but Mariner 9 photographed a much warmer Mars, because it was now twice as close to the Sun.
d Although planetary scientists had their hopes raised by Mariner 4's pictures, they were dashed when Mariner 9 showed an always-geologically-dead planet.
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