system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why is SpaceX attempting to land a Rocket on a drone ship?
gpt
They're trying to develop a rocket that can land vertically and be used again. Due to laws regarding airspace and (mainly) safety regulations, they can't try this over land, so they built a barge out in the water where they can legally develop the technology.