SpaceX just caught the giant first-stage booster of its Starship megarocket — and it plans to do the same with the vehicle's upper stage soon.

SpaceX’s Starship had its fifth test launch in 18 months on Sunday morning and successfully caught a component of the rocket with mechanical arms near where it was launched in Texas, multiple outlets reported, marking a major milestone for Elon Musk’s aerospace company.

SpaceX has pulled off an unbelievable feat by successfully performing the first Starship booster catch. Here's why that matters.