First astronaut splashdown in 45 years is set for Sunday, in the Gulf of Mexico to avoid Isaias First astronaut splashdown in 45 years is set for Sunday, in the Gulf of Mexico to avoid Isaias August 1, 2020 dzadmin Comments 0 Comment Two very special mementos will splash down on Earth with astronauts Bob Behnken and Doug Hurley who, if schedules hold, will return home Sunday after two months in space.