1. Skip to content
  2. Skip to main menu
  3. Skip to more DW sites

ISS astronaut sorry for growth spurt 'mistake'

January 10, 2018

Japan's ISS astronaut Norishige Kanai has apologized for claiming that he had grown 9 centimeters (3.5 inches) during his first few weeks in space. Kanai said his statement was "fake news" due to a "measurement mistake."

https://p.dw.com/p/2qbdK
Three astronauts in space suits prepare for takeoff in Kazakhstan
Kanai (L) arrived to the ISS on 17th of DecemberImage: Reuters/M. Shipenkov

Norishige Kanai, the Japanese astronaut who grabbed international attention by reporting an unprecedented growth spurt in space, apologetically recanted his earlier claims on Wednesday. Kanai is a member of a six-person team currently aboard the International Space Station (ISS).

"I must apologize for this terrible fake news," he tweeted in Japanese.

The 41-year-old Kanai, who stands at 180 centimeters (5 ft 11) on Earth, had claimed that his height has increased by 9 centimeters (3.5 inches) after spending only a few weeks in space.

Read more: Space station launch supplies astronauts with virtual reality camera

Astronauts often experience increase in height during space missions, as low-gravity environment drastically reduces pressure on their spines and allows the vertebrae to spread apart. This increase is usually limited to a few centimeters.

How astronauts work out in space

 Kanai had joked that his growth spurt was making him "a bit worried" he would not be able to fit back into the return capsule this summer.

"My height's been measured here in space and somehow, somehow, I've grown 9 cm!" he tweeted on Monday. "I grew like a plant in just three weeks. Nothing like this since high school. I'm a bit worried whether I'll fit in the Soyuz seat when I go back."

The story made rounds around the world. Kanai, a former medical diver for the Japanese Self-Defense Forces, is already noticeably taller than the average Japanese man, who stands around 171 centimeters tall.

Read more: Pope Francis talks eternity with ISS astronauts

On Wednesday, however, Kanai said that he re-measured himself on the advice of the Russian commander Anton Shkaplerov and determined that he only grew 2 centimeters.

"So it was a measurement mistake (?), but it seems many people are talking about it," the astronaut said from orbit, also praising the experience of Shkaplerov for noticing the unlikely measurement.

This is Kanai's first mission in space. He arrived at the ISS in December and is scheduled to return to Earth after spending nearly six months aboard the station.

How to wash your hair in space

dj/msh (Reuters, AFP)