The first artificial satellite on earth is ______________?
Correct answer: D. Sputnik I.
- A. Gaia
- B. Giotto
- C. Prithvi
- D. Sputnik I.
Explanation
Sputnik I, launched by the Soviet Union in 1957, was the first artificial satellite to orbit Earth. Giotto, Prithvi, and Gaia were later spacecraft or satellite missions.
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About Inventions and Discoveries
Inventions and Discoveries covers the people, dates, principles and practical uses behind developments such as the wheel, printing press, telephone, electricity, radio, computer, internet, vaccines and space technology. It distinguishes an invention, which creates a device or process, from a discovery, which identifies something already present in nature.
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