#MoonDay 2021: 52 years of 1969 #Lunar #moon landing; History & Significance:
Millions of people around watched live telecast #mission. Success of mission, #NASA @NASA @NASAMoon described landing "single greatest technological achievement of all time.”
#Thread #technology #tech Image
Day when man first walked on moon. #Apollo11 #spaceflight carried Commander #NeilArmstrong and lunar module #Pilot, Buzz Aldrin and Michael Collins. National Moon Day proclaimed in 1971 by then #US #USA #President Richard Nixon to honor #Anniversary of man's first moon landing.
Not only celebrates #historical human landing on moon but also opened opportunities for #future #Missions.
“That one small step for man, one giant leap for mankind.” – Neil Armstrong’s first words from moon heard all over Earth on this day in 1969.
While Alridn and Armstrong made
First crewed landing on surface, Collins was #astronaut who flew Apollo 11 command module #Columbia around moon. Armstrong stepped onto lunar surface 6 hours after landing on moon. Spent nearly 2 and half hours outside spacecraft, followed by Buzz Aldrin. 2 astronauts collected..
21.5 kg lunar material, made journey back to Earth for analysis. Spent over 21 hours on lunar surface at site they named "Tranquility Base". Rejoined astronaut Collins in command module Columbia and returned to Earth on July 24. Important days not just in history of #UnitedStates
But also world as #sky opened up to new #exploration and #possibilities. Achievements of Apollo 11 made NASA step up efforts for more missions to world. Documentaries about Apollo 11 - In the Shadow of the Moon, First to the Moon: The Journey of Apollo 8, One Giant Leap: The...
Impossible Mission That Flew Us to the Moon.
July 20th, 2019 was 50th Anniversary Observance of Apollo 11 Lunar Landing. No National Day declared but #President #DonaldTrump @POTUS45, in 2019 proclaimed it. In 1961 then-president Kennedy appealed to special joint session of...
Congress for mission of sending astronauts to moon. NASA after 5 years of great efforts and hard work initiated unmanned Apollo Mission. On July 19, 1969 manned Apollo 11 entered Lunar orbit. 6 hours after Apollo 11 landed, Neil Armstrong became first person to step onto lunar...
Surface on July 21 at 02:56 AM. Armstrong was followed by Buzz Aldrin 19 minutes later. Trio returned to Earth and landed in #Pacific #ocean on July 24 after more than 8 days in #space. Moon landing saw end of space race, putting United States at forefront of travelling and...
Exploring space further. Soviet Union not to be outdone, and in months and decades followed, both it and NASA stepped by space missions.
Space enthusiasts usually get together on day at planetariums or #astronomy clubs and talk about Moon landing 1969 as gaze at heavenly bodies..
Through telescope.
Things changed when Richard Christmas stepped in and launched Christmas Card writing campaign. Wrote letters to governors and members of Congress in all 50 states and urged to create Moon Day. Achieved success and by 1975, 12 states sponsored bills observing...
Moon Day. Not declared officially by anyone.

Few facts about moon:
73,476,730,924,573,500,000,000 kg is mass of moon. 16.50 % is decrease in human weight on moon. Moon shifts farther from @earth by 1 inch every year. 2300mph is travelling speed of moon orbiting #Earth.
Surface area of moon is 146 million square miles.
Neil A. Armstrong took picture with 70mm Hasselblad lunar surface camera. Astronauts Armstrong and Aldrin descended in LM, "Eagle", to explore Sea of Tranquility region of moon.
Paved way for people like #ElonMusk @elonmusk,
Founder of #SpaceX @SpaceX, and #RichardBranson @richardbranson, founder of #VirginGalactic @virgingalactic, to launch own private space programs, according to Dr. Bill Bush, history professor, teaches “Topics in U.S. History: The 1960s” at Texas A&M University @TAMU #SanAntonio
Apollo 11 was first space mission to land humans on moon, then 6 more missions followed.
Apollo 11 (July 1969) -First mission to land on moon.
Apollo 12 (November 1969) -Struck by lightning twice just after launch.
Apollo 13 (April 1970) -Only mission to not land on moon due to..
System malfunction.
Apollo 14 (February 1971) -Spent most time on lunar ground, up to that point, at 9 hours, 23 minutes.
Apollo 15 (July 1971) -Had first automotive vehicle on moon.
Apollo 16 (April 1972) -First spacewalk happened during return back to @NASAEarth.
Apollo 17 (December 1972) -Collected 4.2 billion-year-old rock from moon.

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