On Monday, Elon Musk's SpaceX had the biggest rocket launch and landing in history. After shooting one of its Falcon 9 rockets into space, SpaceX then turned part of the rocket, called the first stage, around for an epic landing at its Landing Zone 1.

The big idea behind it is to spawn a fleet of reusable rockets that can launch, land, refuel, and relaunch within a few hours. So you might think SpaceX's next step would be to relaunch this 14-story rocket to prove its reuse capabilities, but that won't be happening.

During a teleconference on Monday after the mission, Musk said SpaceX would not refly the retrieved rocket stage, shown here:

SpaceX