Sure! Here is a brief biography of Yuri Gagarin in English, summarized in 10 important sentences:

1. Yuri Alekseyevich Gagarin was born on March 9, 1934, in Klushino, Russia.
2. He grew up in a peasant family and showed an early interest in aviation.
3. Gagarin joined the Soviet Air Force and became a pilot after completing his education.
4. In 1960, he was selected as one of the first cosmonauts for the Soviet space program.
5. On April 12, 1961, Gagarin became the first human to travel into space aboard the Vostok 1 spacecraft.
6. His historic flight lasted 108 minutes and completed one orbit around the Earth.
7. Gagarin's successful mission made him an international hero and a symbol of Soviet space achievement.
8. After his flight, he became a prominent public figure and traveled around the world promoting space exploration.
9. Tragically, Gagarin died in a plane crash on March 27, 1968, at the age of 34.
10. Today, he is remembered as a pioneer of space travel and a national hero in Russia.