From left: Expedition 58/59 astronaut Anne McClain, Roscosmos cosmonaut Oleg Kononenko and Canadian Space Agency astronaut David Saint-Jacques. (Credit: NASA)

After 204 days orbiting Earth on the International Space Station, three astronauts will return to Earth tonight. June 24 marks the end of their mission as Anne McClain, Oleg Kononenko, and David Saint-Jacques, undock from ISS and eventually land in Kazakhstan.

The three crew members are scheduled to depart the ISS at around 7:30 p.