Armstrong, Aldrin, and Collins were all members of Apollo 11. Armstrong and Aldrin were the first two people to make it to the moon's surface. Collins remained in the space capsule in orbit around the moon.
Explanation
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The MSL is a vehicle called a rover. It is the fourth rover to land on Mars. The other three rovers are Sojourner and the two Mars Exploration Rovers, Opportunity and Spirit.
The Soviet Union launched Gagarin on April 12, 1961. He remained in space for about 108 minutes.
At least two missions have ventured to Mercury, Venus, Mars, Jupiter, and Saturn. Voyager 1 is the only probe to fly past Uranus and Neptune.
The two Pioneer probes were launched to in 1973 and the Voyager probes in 1977. Voyager 1 passed Pioneer 10 in distance from Earth in 1998, becoming the farthest artificial object.
The United States sent seven missions to land on the moon. Apollo 13 was unable to complete the landing due to a mechanical failure during the flight.
The Soviet Union successfully landed a space capsule on Mars before Viking 1 landed. However the Soviet probe malfunctioned and was unable to send useful information back to Earth. Viking 1 landed in July 1976 followed about a month later by Viking 2.
The Soviet Union was the first country to launch an object (satellite), animal (dog), man, and woman into space. Valentina Tereshkova was launched into space on June 16 aboard Vostok 6.
China joined Russia (formerly the Soviet Union) and the United States in launching a person into space in 2003. Yang Liwei orbited Earth for a little over 22 hours aboard the Shenzou 5 pace capsule.