There are currently 6 humans living and working aboard the International Space Station (ISS). Astronauts and cosmonauts typically serve aboard ISS for four to six months, although two crew members (NASA astronaut Scott Kelly and Russian cosmonaut Mikhail Kornienko) spent 340 days on the orbital laboratory beginning in March 2015. From 1986 to 2000, several Russian cosmonauts spent at least 365 days in space aboard the Russian space station, Mir.
Astronauts Need Good Teeth
Four months is sufficient time for a minor dental problem to turn into a medical emergency, so the most important part of astronauts’ oral hygiene is the same as it is here on Earth–prevention. [Read more…]