Corona (satellite) retrieved two days later by a C-119 Flying Boxcar transport plane. This was the first successful return of photographic film from orbit. In comparison, Sputnik 5 was launched into orbit on August 19, 1960, one day after the launch of Discoverer 14. Sputnik 5 was a biosatellite that took into orbit the two Soviet space dogs, Belka and Strelka, and then safely returned them to the Earth . At least two launches of "Discoverers" were used to test satellites for the Missile Defense Alarm System (MIDAS), an early missile-launch-detection program that used infrared cameras to detect the heat signature of
Space Dogs the flight group was chosen. At the end of their flight, Strelka wanted to stay in space, because her mother had said that her father, Sirius, is living among the stars. Kazbek shows up having stowed away on their flight, and tried to convince Strelka to turn around. They saw a formation of objects flying towards them, believing them to be Space Dogs but they turned out to be meteorites, they got hit by a meteorite shower and the rocket caught fire from the damage. Strelka, Venya and Kazbek went to the back of the rocket to fight the fire