This document discusses key events and discoveries related to living things in space. It notes that Isaac Newton discovered gravity when an apple fell on his head. It then mentions that Laika was the first living thing in space in 1957 and Yury Gagarin was the first person in space in 1961. Neil Armstrong was the first person to land on the moon in 1969. Finally, it states that Galileo was the first to show the Earth orbits the sun and invented telescopes.