NASA has two identical satellites that orbit the Earth with one chasing the other, and they track the distance between them to measure changes in gravity. Their nicknames are “Tom” and “Jerry.”
Source: Unbelievable Facts
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Interesting Facts For Everyday
NASA has two identical satellites that orbit the Earth with one chasing the other, and they track the distance between them to measure changes in gravity. Their nicknames are “Tom” and “Jerry.”
Source: Unbelievable Facts
Interesting Facts