A student researching the Voyager missions has taken the following notes:

• Voyager 1 and 2 were launched by NASA in 1977 • Both spacecraft have now entered interstellar space • Voyager 1 is the most distant human-made object from Earth • The spacecraft carry golden records with sounds and images from Earth • Both Voyagers continue to transmit data back to Earth over 45 years later

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The student wants to emphasize the longevity and continued operation of the Voyager missions. Which choice most effectively uses relevant information from the notes to accomplish this goal?

A

Both Voyager spacecraft carry golden records containing sounds and images representing life on Earth.

B

Voyager 1 is now the most distant human-made object from Earth, having entered interstellar space.

C

Over 45 years after their 1977 launch, both Voyager spacecraft continue to transmit scientific data back to Earth.

D

NASA launched Voyager 1 and Voyager 2 in 1977 to explore the outer planets of our solar system.

Correct Answer: C

Choice C. 45+ years of continued operation emphasizes longevity.