During our next flight, SpaceX will attempt the precision landing of a Falcon 9 first stage for the first time, on a custom-built ocean platform known as the autonomous spaceport drone ship. While SpaceX has already demonstrated two successful soft water landings, executing a precision landing on an unanchored ocean platform is significantly more challenging.
Background gas levels are low — but they spike periodically.

Apollo 17 leaving the moon; December 14, 1972
The World Outside My Window - Time Lapse of Earth from the ISS





kreuzaderny