New Delhi, March 15 -- After a months-long wait, SpaceX and NASA have launched a mission to bring back US astronauts Sunita Williams and Butch Wilmore from the International Space Station (ISS).

Williams and Wilmore have been stuck aboard the space station for nine months now. They were on a mission that was supposed to last for only about a week.

The lift-off of the mission to bring back the astronauts took place at 7:03 ET on Friday, with a Falcon 9 rocket carrying a Dragon spacecraft on the Crew-10 mission.

While the whole world awaits the astronauts' return after nine months, experts say it won't be easy for them to adapt to the earth's ways.

When astronauts return to the earth, they typically face a number of physiological issues...