We’ve come a long, long way since the U.S. first launched fruit flies into space in 1947. Since then, we’ve sent astronauts to the moon, installed an International Space Station in orbit and landed spacecraft on Mars. In the past couple of decades, private corporations such as SpaceX and Blue Origin have joined the fray and will likely play instrumental roles in aerospace engineering and space exploration. Here’s a look at some major advancements we’ve made in spacecraft technology and space exploration milestones over the past seven decades.
Source : https://www.seattletimes.com/life/milestones-in-space-travel-an-illustrated-timeline/