The American spacecraft Crew Dragon undocked from the International Space Station (ISS) on Saturday, TASS reported.
The broadcast is being held on the NASA website.
Over 40 specialists, two search and rescue vessels, two speed boats, and several helicopters will be involved in the operation to evacuate the astronauts.
One boat is needed to check the tightness of the landing ship, and the other will take the parachute system.
After being transferred aboard the search and rescue vessel, the astronauts will undergo a medical examination and are expected to be flown to Florida in four hours or by sea.