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Construction of deliverable bomb
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World War || American B-29 bomber dropped worlds first deployed atomic bomb over Hiroshima
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Soviet Union began its hydrogen bomb program and first developed fusion design in 1949
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RDS-1 First nuclear test by soviet at semipalatinskon
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1st artificial satellite for Space Race
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Carried first living being to orbit which was a dog named Laika. The dog died a few hours into the launch but the spacecraft continued to orbit for 162 days
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First US satellite. Key importance for discovery of the Van-Allen Radiation belt
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First rocket engine restart in earth orbit
First lunar spacecraft
First detection of solar winds -
First imaging weather satellite
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First animals and plants returned to earth from space alive
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Yuri Gagarin became the first human on history to travel to space he orbited for 2 hours
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First successful human spaceflight few weeks after Vostok 1 Alan Shepherd om board
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First spacecraft to impact the far side of the moon
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First women in space
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First multi person Crew
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First piloted spacecraft to orbit change
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First crew exchange in space
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First manned moon landing Neil Armstrong, Michael Collins, Buzz Aldrin
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First ICBM to hold multiple independent reentry vehicles. Minuteman ||| is only ICBM still deployed in US.
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First soft landing on another planet (Venus)
First signals from another planet -
USSR launched first space station into orbit which would form the basis for the later Mir Space Station
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First mobile vehicle lunar rover driven by humans on the moon
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First spacecraft to orbit another planet (Mars)
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84 day human-crewed space record
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First multinational human-crewed mission - Several countries or nationalities-
