Bayan kaiwa orbit, Sputnik 2 ta hanci mazugi da aka jettisoned nasarar; duk da haka da "Block A" core ba raba kamar yadda aka shirya, hana thermal kula da tsarin daga aiki daidai. Wasu daga cikin thermal rufi tsage, tada da gida zafin jiki zuwa 40 ° C (104 ° F). Bayan sa'o'i uku na weightlessness, Laika ta bugun jini ya koma ya zama 102 sau / minti fiye da watanni uku, Laika ta yi kasawa a lokacin gwajin uku tsakanin sau uku zuwa hudu da pre-launch kudi.
Rukunin A