Three complex sentences about space exploration

1. Space exploration is the study of the universe which includes exploration of planets, systems, galaxies, and even for creatures!

2. Sending manned flight to space was only possible recently within the last 100 years or so.

3. The first living being sent to space was a dog named Laika. She was launched in November 1957. 

Thank you! 

can you tell me the answers to this