Sputnik I (oct 4, 1957 – dec 4, 1957)
Description:
The Soviet Union launches the first successful satellite into space. Less than a month later they launched a second satellite with a dog named Laika on board. She was put to sleep 7 days after launch to avoid her suffocating when the oxygen ran out.Added to timeline:
Date:
oct 4, 1957
dec 4, 1957
~ 2 months