Who was the first person went on to space and who was the first one to moon?

Answer 1

Neil Armstrong, Edwin “Buzz” Aldrin, and the oft forgotten Michael Collins became the official crew of Apollo 11. Immediately, attention turned to which crew member – Armstrong or Aldrin — would be the first to walk on the moon (Collins was the command module pilot and, therefore, was ineligible).

Answer 2

Adding to Shivaranjini answer,

Yuri Gagarin was the first person who went to the space. On 12 April 1961, he (aged 27 years at that time) was launched into orbit on the Vostok 3KA-3 spacecraft (Vostok 1).