Show Summary Details

Quick Reference

A prototype communications satellite, launched by NASA in August 1960. It was an aluminium-coated plastic balloon that proved pictures and sound could be transmitted by reflecting them off an orbiting satellite. Echo 2 was launched in 1964.

Subjects: Astronomy and Astrophysics.

Reference entries

Users without a subscription are not able to see the full content. Please, subscribe or login to access all content.