"Splashdown of Dragon confirmed, completing SpaceX’s 22nd cargo resupply mission to the @space_station!" SpaceX said on Twitter on Friday.
The splashdown was performed in the Pacific Ocean at around 11:29 p.m. EDT on Friday (03:29 GMT on Saturday).
The SpaceX cargo capsule had faced a two-day delay in its return to Earth since it had to wait for Tropical Storm Elsa to clear the area. It brought back several tons of experiment samples and cargo from the ISS.
The NHS said the devices used to monitor blood-oxygen levels at home may give inaccurate readings for people with darker skin.