Vostok programme it into an even higher orbit. The orbit eventually decayed, and it re-entered the atmosphere several years later. The next six launches were all of the "Vostok 1K" design, equipped with life-support facilities, and planned to be recovered after orbit. The first spacecraft launched on July 28, 1960 carried two space dogs named Chayka and Lisichka. An explosion destroyed the spacecraft shortly after launch, killing both dogs, and the mission was not given a name. The next mission, designated Korabl-Sputnik 2, was launched on August 19, 1960, carrying two more dogs, Belka and Strelka, as well as a variety of
Korabl-Sputnik 2 orbit by a Swedish radio station. The spacecraft carried two dogs, Belka and Strelka, 40 mice, two rats and a variety of plants, as well as a television camera, which took images of the dogs. One of its objectives was to intercept the US Echo 1A satellite, which was a passive, nitrogen-filled balloon covered in reflective foil and thus highly visible as it passed overhead. Korabl-Sputnik 2 passed near Echo on the second orbit, and the radio system returned audio of the dogs barking as they saw it out the window. The spacecraft returned to Earth at 06:00:00 UTC on