apr 14, 1958 - Sputnik 2 reentered Earth’s atmosphere.
Description:
However, Laika died 5-7 hours into launch but the spacecraft continued to orbit for 162 days (2500 orbits) until it burned up in the atmosphere on 14 April, 1958.Added to timeline:
Date:
apr 14, 1958
Now
~ 68 years ago