The "Space Age" refers to the period that began with the launch of Sputnik 1 by the Soviet Union in 1957, marking humanity's first entry into space exploration. This era is characterized by significant advancements in technology, including the development of satellites, space probes, and human spaceflight. During the Space Age, notable events included the first human in space, Yuri Gagarin, in 1961, and the Apollo 11 mission in 1969, which successfully landed Neil Armstrong and Buzz Aldrin on the Moon. The Space Age has led to ongoing exploration of our solar system and beyond, shaping our understanding of the universe.