Chronological order refers to the process of arranging information (that is historic in nature) according to the order in which they occurred, starting from the earliest to the latest.
<h3>What is the chronological order of the above listed information?</h3>
- Sputnik was launched on October 4, 1957. I was sent into orbit.
The first artificial satellite in history was Sputnik I, which the Soviet Union launched on October 4, 1957.
- Explorer I was launched on January 31, 1958.
The United States' first artificial satellite, Explorer I, was launched into Earth orbit. It was launched on January 31, 1958, in retaliation for the Soviet Union's launch of Sputnik I and Sputnik II, which started the space race, which was intimately tied to the Cold War.
- On April 12, 1961, people orbited the planet.
Yuri Gagarin, a Soviet astronaut, became the first person to enter and leave outer space on April 12, 1961, onboard the spacecraft Vostok I.
- On July 20, 1969, a person made the first lunar landing.
Neil Armstrong and Buzz Aldrin spent two and a half hours walking over the Moon's surface as part of the Apollo 11 mission in July of 1969.
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Full Question:
Arrange the following events in space exploration in chronological order
1 Humans orbited Earth.
2 Sputnik I was launched into space.
3 The first human stepped onto the moon.
4 Explorer I was launched.
