Explorer I was launched on which date?

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Study for the Space and National Security Test. Review with flashcards and multiple choice questions, each question includes hints and explanations. Prepare for your exam!

Multiple Choice

Explorer I was launched on which date?

Explanation:
The date a mission actually lifts off is what this item tests, focusing on the exact launch moment of the first U.S. satellite. Explorer I, the United States’ first satellite and a milestone in the early space race, launched from Cape Canaveral on January 31, 1958, aboard a Juno I rocket. That date is the historical record for when the satellite left the ground and began its mission, which later yielded important science like evidence of the Van Allen radiation belts. The other dates correspond to different events or times not tied to Explorer I’s launch, so they don’t fit the event in question.

The date a mission actually lifts off is what this item tests, focusing on the exact launch moment of the first U.S. satellite. Explorer I, the United States’ first satellite and a milestone in the early space race, launched from Cape Canaveral on January 31, 1958, aboard a Juno I rocket. That date is the historical record for when the satellite left the ground and began its mission, which later yielded important science like evidence of the Van Allen radiation belts. The other dates correspond to different events or times not tied to Explorer I’s launch, so they don’t fit the event in question.

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