أ Yuri Gagarin, the Russian cosmonaut, is remembered as the first human to fly into outer space, having spent one hour and forty-eight minutes in a complete orbit around the earth. ب Around the earth, as the first human to fly into outer space, is remembered Yuri Gagarin, the Russian cosmonaut, having spent one hour and forty-eight minutes in a complete orbit. ج Having spent one hour and forty-eight minutes in complete orbit around the earth. Yuri Gagarin, the Russian cosmonaut, as the first human to fly into outer space, is remembered. د As the first human to fly into outer space, is remembered Yuri Gagarin, the Russian cosmonaut having spent one hour and forty-eight minutes in complete orbit around the earth.