NASA successfully tested the RS-25 engine, which will power the Space Launch System (SLS). This is the sixth test that NASA ran at the Stennis Space Center in Mississippi.
The engine was fired up for 535 seconds and then data was collected to determine changes that would need to be made to make sure it can carry the massive new rocket.
RS-25s were previously known as the main Space Shuttle engines. However, they need to be retested since the SLS is much bigger and it requires more power.
The SLS was created specifically to launch the Orion spacecraft for future deep-space missions, including both unmanned and manned trips to Mars.
If all goes as planned, it will carry an unmanned capsule to space for the first time as soon as 2018.
Click here if you missed seeing the engine spew out fire from up close.