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NASA History Office

The Soviet lander Mars 6 launched #OTD 1973. It lost contact shortly before touchdown on Mars. go.nasa.gov/2hrT00W
Mariner 7 made its closest approach to Mars #OTD 1969, about a week behind sister ship Mariner 6.
#Remembering Neil Armstrong, aviator and first human to step on the Moon, born #OTD in 1930. Read Neil's bio here: go.nasa.gov/2hrY5q8
Come rove with me. See five years of driving on #Mars in 5+ minutes. youtu.be/O0nPFaBU98k
Retweeted by NASA History Office
#OTD in 1181, medieval stargazers saw the beginning of a supernova that lasted 185 days, pulsar remnants still visible today. #PulsarWeek
The spiral galaxy shown here in different wavelengths was discovered and named Dwingeloo 1 #OTD in 1994.
3 astronauts share a #birthday today! 1st submariner in space Mike McCulley (red shirt), 3-timer Sam Gemar, and Andy Allen (pumpkin suit).
Happy 40th anniversary, @ENERGY! President Carter signed the Dept. of Energy Organization Act #OTD 1977: go.nasa.gov/2hsrSyE
It's been 10 years since the Phoenix Mars Lander launched! The flawless pre-dawn liftoff occurred #OTD in 2007. go.nasa.gov/2fcNfn4
While on the end of Canadarm2, astronaut Steve Robinson removes gap fillers from Discovery's (STS-114) heat shield tiles #OTD 2005.
#OTD 1981 Dynamics Explorer 1 set off to study the plasmas of the atmosphere! go.nasa.gov/2hoUl8P
MESSENGER launched #OTD 2004; ended with a successful impact into Mercury's surface in 2015 after sending us close-up photos of the planet!
#OTD 1961 Robert Gilruth, director of the Manned Spacecraft Center, was briefed on the capabilities of the Titan II rocket (used in Gemini).
#HappyBirthday to astronaut Joan Higginbotham! An engineer, she was a mission specialist for STS-116 Discovery. go.nasa.gov/2hlK3WH
Before leaving the Moon, Apollo 15's Dave Scott performed Galileo's hammer-feather experiment #OTD 1971. Full video: go.nasa.gov/2wmeQ8x
#HappyBirthday to the 1st Hungarian citizen in space, Bertalan Farkas! He flew as a cosmonaut in 1980 aboard the Salyut 6 space station.
That feeling when you lift off the Moon like Apollo 15 did #today in 1971: go.nasa.gov/2wmqMqY #FelizMiercoles
US military obtained its 1st aircraft #OTD 1909. The Wright Flyer was bought from the Wright brothers for $30,000, over $775,000 today
Apollo 15's LM Ascent stage lifted off from the Moon #OTD 1971; the 1st televised ascent from the lunar surface. go.nasa.gov/2vqNJNk
#HappyBirthday Cosmonaut Valery Bykovsky! One of the 1st Soviet cosmonauts, spent nearly 3 weeks in space over 3 missions.
STS-43 Atlantis deployed the communications satellite TDRS-5 #OTD 1991. Up next for launch: #TDRSM! @NASA_TDRS
Dave Scott sets down a lunar surface drill during the 2nd moonwalk of Apollo 15 #OTD in 1971: go.nasa.gov/2hlsPJm
Maria Mitchell, discoverer of the comet of 1847 (using a 2-in telescope!) & 1st US female professional astronomer was born #OTD 1818.
#HappyBirthday to astronaut Dick Covey, who brought some style to the flight deck Space Shuttle Endeavor in this photo from STS-61.
Caroline Herschel discovered her first comet #OTD in 1786. In her lifetime, she would discover 7 more comets.
 
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