The RS-25 engine for NASA’s new rocket, the Space Launch System, is one of the most complex and efficient rocket engines in the world. Four RS-25 engines and two, five-segment solid rocket boosters will power the SLS on deep space missions, including to an asteroid and ultimately to Mars. The RS-25 has been modified for SLS specifications, including a higher thrust level, and is being tested at NASA’s Stennis Space Center near Bay St. Louis, Mississippi.
Credit: NASA
