NASA is Bringing the Space Shuttle Engine Back to Launch the World’s Largest Rocket
![](https://avgeekery.com/wp-content/uploads/2017/07/RS-25-test-fire.jpg)
The first reusable rocket engine in history, the RS-25, proved its worth during NASA’s 30-year space shuttle era, helping power the orbiters uphill from 0 – Mach 25 in just 8 minutes,…
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