There was a time when the earth was thought to be the center of the planet. Centuries of research and exploration have demystified that myth.
Space exploration first began as a competition between Russia and the US. Each is running to outdo each other and emerge top of the field. This led to achievements by both countries that we still marvel at today. For instance, the famous moon landing by Apollo 11 saw the first man on space on July 20th, 1969. Neil Armstrong, who was the mission commander and Buzz Aldrin landed the lunar module Eagle safely on the moon on 20th July 1969 at 20:18 UTC. There have been several achievements in space exploration since then, and there were some made even before the first man on the moon.