00:00Historically, Project Prometheus of 2003 was a pioneer intended to support ion-driven probes
00:08like the Jupiter Icy Moon's orbiter, but it was cancelled after budget cuts.
00:14The NERVA tests in the 1960s put nuclear thermal technology into practice for the first time.
00:22Dozens of engine tests were conducted of which more than 20 are considered successful.
00:29These tests reached temperatures of up to 2550 Kelvin before the program ended in 1973 due to lack of funding.
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