
Sputnik 1 was the first artificial Earth Satellite. Launched by the Soviet Union on 4 October 1957, the mission's success is believed to be what triggered the twentieth century space race.
Sputnik 2 was the second spacecraft ever launched into Earth's orbit. Launching on 3 November 1957, it carried the first living animal, Laika the Soviet space dog into orbit.
Yuri Gagarin was a Soviet Air Forces pilot and cosmonaut who became the first human to journey into outer space. Upon his return to Earth he became an international celebrity and is remembered as a pioneer of space exploration.
On July 20, 1969, Apollo 11 astronaut Neil Armstrong made history as the first man to walk on the moon, and uttered his famous words: "That's one small step for man, one giant leap for mankind."
The Space Shuttle Challenger disaster was a fatal incident in the United States space program that occurred on January 28, 1986, when the Space Shuttle Challenger broke apart 73 seconds into its flight, killing all seven crew members aboard.
Of all the grand experiments launched in space, the Hubble telescope is among the most daring.
Curiosity is a car-sized rover designed to explore Gale Crater on Mars as part of NASA's Mars Science Laboratory mission. Curiosity was launched from Cape Canaveral on November 26th, 2011, and landed on Aeolis Palus inside Gale on Mars on August 6th, 2012.
SpaceX conducted the Falcon Heavy's maiden launch on February 6, 2018. The rocket carried a Tesla Roadster belonging to SpaceX founder Elon Musk, carrying a dummy dubbed "Starman", as a dummy payload.
Ellen Ochoa, Director of the NASA Johnson Space Center, talks about human space exploration: what we’re doing here in Texas to make it a possibility, how we’re working with commercial and international partners, and what the future has in store for a human presence in space.
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