Earlier on Monday, Norishige Kanai tweeted that he had grown about 9cm since he arrived in the International Space Station three weeks earlier. However, earlier last night, the astronomer tweeted an apology last night as he revealed that he made a mistake in measuring his increase in height and he has only grown about 2 centimeters.
In case you didn’t know, generally astronauts grow as much as 3 percent due to zero-gravity environment with the average height increase falling between 2 and 5 cm. However, following their returns to earth, astronauts get back to their original height after couple of weeks. As a result, Kanai’s report of such increase in height attracted pretty wide coverage.
At the moment, Russian Soyuz capsules are only spacecraft capable of carrying astronauts to and from ISS and according to NASA, the spacecraft can accommodate astronauts up to a height of six feet three inches. As a result, Kanai’s initial tweet raised concern if he would be able to get back to earth following conclusion of his stay in International Space Station.
At the moment however, it’s unclear how the original measurement was taken which led to the error.