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GPS

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Navstar 1, the first GPS satellite launched 1978, took off on Feb 22, 1978. This friendly piece explains the Block I tests, atomic clocks, and how that small launch grew into the GPS system we rely on today. 儿童科学

Navstar 1：1978年发射的首颗GPS卫星

Navstar 1是1978年发射的首颗…

Alexandra Hochee

Alexandra Hochee

20 6 月, 2026 •
1 分钟阅读
A warm, simple guide to satellite for kids. Learn what satellites do, how orbit works, and find Storypie stories and listening games to spark family wonder. 儿童科学

儿童卫星：微小的哔声与广阔的天空

一个温暖而简单的儿童卫星指南。了解卫星的…

Roshni Sawhny

Roshni Sawhny

5 4 月, 2026 •
1 分钟阅读

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