What did NASA astronaut Christina Koch do on the ISS?

Can you imagine spending almost an entire year of your life without gravity and orbiting the Earth every 90 minutes?

Well that's what life has been for US astronaut Christina Koch who has just returned to Earth after spending 328 days living on the International Space Station.

She made the most of her first trip to the International Space Station by breaking the record for the longest single spaceflight by a woman and conducting the first all-female spacewalk with fellow NASA astronaut Jessica Meir.

Sameena's been taking a look at how she spent her time at the ISS.