Sputnik 1,2,3

This term I been learning about the space race between Russia and America for reading. In 1957 Sputnik 1 was the first sateillte to orbit around the earth. It was a Russian satellite and its name means 'traveller'. Sputnik 1 collected information about space to send to earth. Today satellites are used to transmit radiowaves to televission stations, cellphone connections and networks. Later in 1957 Sputnik 2 was launched. This satellite was different because it had a living passenger. That passenger was Laika the dog. Laika was trained for the experiments but sadly didn't make it back to earth. I don't agree that dogs should be sent into space because they can't make this choice for themselves.