NASA demonstrated the Orion spacecraft’s launch abort system’s (LAS) capabilities to outrun a speeding rocket and return the astronauts safely to the Earth’s surface in the case of an emergency.

If all goes well, this will be the only time we will ever see the test. If you’re looking for a breakdown of what the Ascent Abort 2 flight test (AA-2) is and how it works, read last week’s article about everything you need to know about the AA-2 test.