splashdown

noun

1. (countable, uncountable)The act of landing in water, as by a space capsule or rollercoaster.

   “To get back to Earth, the space capsule had to withstand predicted temperatures of about 5,000 degrees Fahrenheit and slow down from nearly 25,000 miles per hour — or more than 30 times the speed of sound — to a gentle 19 mph or so before splashdown.”