The remaining astronauts are Russia’s Alexander Skvortsov and Oleg Skripochka, as well as ISS Commander Luca Parmitano from Italy.
Last week, Dr Meir concluded a series of spacewalks with Mrs Koch to replace and upgrade the space station’s batteries.
To mark the occasion, she shared on Twitter the stunning “space selfies” she took while in the vacuum of space.
Then on Tuesday, she shared a breathtaking photo of the Gulf of California, or as it is sometimes known, the Sea of Cortez.
The image looks more like a watercolour painting than a photograph taken with a digital camera.