Multiple choice general knowledge science & technology

First US satellite is -

  1. Expenditure

  2. Columbia

  3. Explorer 1

  4. Discovery
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Explorer 1, launched on January 31, 1958, was America's first satellite. It discovered the Van Allen radiation belts. Columbia and Discovery were Space Shuttles (1980s), not satellites.

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