People on Earth
Echo 1, the
Launched by
"Instantaneous
A true communications
The idea behind
While, Echo 1
Echo 1 was made
The satellite
More than a giant space
Among Echo 1's
In the radio message, Eisenhower said, "This is one more
The first
The giant,
"Amateur
Incidentally, to
The satellite also proved
The spacecraft
Although NASA
Still,
The Las
"Echo 1 was
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