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Sputnik 1
The Sputnik 1 was the first to be successfully launched and enter earth's orbit which began the space age. https://www.nasa.gov/multimedia/imagegallery/image_feature_924.html -
Sputnik 2
Speed on orbit-4,576 miles/s
Orbits completed- 2570 -
The first animal to orbit earth!!!!!
Laika the dog was the first to orbit the earth -
Explorer 1
Explorer 1 was the first satellite of the United States,It was part of its participation in the International Geophysical Year -
Luna 1
The first spacecraft to reach the vicinity of the Earth's Moon, and the first spacecraft to be placed in heliocentric orbit
http://www.zarya.info/Diaries/Luna/Luna01.php -
Yuri Gagarin
Yuri Alekseyevich Gagarin was a Soviet pilot and cosmonaut. He was the first human to journey into outer space when his spacecraft completed an orbit of the Earth on 12 April 1961 -
Alan Shepard
Rear Admiral Alan Bartlett Shepard Jr. was an American astronaut, naval aviator, test pilot, and businessman.He became the first American to travel into space
https://www.jsc.nasa.gov/Bios/htmlbios/shepard-alan.html -
John Glenn
Colonel John Herschel Glenn Jr. was a United States Marine Corps,.
Became the first American to orbit the Earth, circling it three times -
Gemini Program
Gemini 4 mission, Ed White became the first American to conduct a spacewalk
https://www.nasa.gov/multimedia/imagegallery/image_feature_1098.html -
Gemini Program- Gemini 8
The mission conducted the first docking of two spacecraft in orbit but the spacecraft had a malfunction
https://nssdc.gsfc.nasa.gov/nmc/spacecraftDisplay.do?id=1966-020A -
Apollo 1
Apollo 1 was going to the first 3 man mission to do a lunar landing but during a flight test a fire happened inside the capsule killing all 3 men
https://www.space.com/17338-apollo-1.html