How long can an astronaut stay on the ISS?

Q: What do you do on the International Space Station (ISS)?. A: Astronauts and cosmonauts on the space station stay busy. There's lots of work ... www.jsc.nasa.gov/sightings/index.html to find out when you can see the ISS. Q: How long are the missions? A: The ISS missions, called expeditions, usually last about six months. read more

The longest time (by Russians) on the ISS is over one year (but less than two). But they can stay for any period, recognizing the trip up and back is expensive. read more

If we can keep our astronauts healthy, they can probably spend many years, even decades in space and recover quickly on return to Earth. But until we find a way to make sure they stay healthy in space, we can't be sure that they can survive long multi-year missions in space. read more

Astronauts stay on the ISS for 6 or more months.Generally, it is for 6 or more months. read more