NASA History Officeಪರಿಶೀಲಿಸಿದ ಖಾತೆ

Today we #remember @NASA astronaut Neil Armstrong, born #OTD in 1930. Armstrong was not only the first human to walk on the Moon, but he was also a research pilot in the X-15 and carried out the first successful docking of two vehicles in space as commander of Gemini VIII.pic.twitter.com/SgiLgTt3hk

Previously obscured by the dust, gas, and stars of our Milky Way Galaxy, the Dwingeloo 1 spiral galaxy was discovered #OTD in 1994 using the Isaac Newton Telescope. Dwingeloo 1 is about 10 million lightyears away in the Cassiopeia constellation. #outofthisworldpic.twitter.com/YOHRQ7ggOD

This #frostingfriday we're highlighting this realistic cake seen at @ExploreSpaceKSC in 2011, created to celebrate the Space Shuttle Program's 30th anniversary. Yes, it really is a cake... with flames! #NASA60th #LightThisCandlepic.twitter.com/Ao6TG4TMIU

#HappyBirthday to astronaut Andy Allen! A @USMC pilot/test pilot with 6,000+ flight hours. As an astronaut, he flew for over 900 hours in space piloting STS-46 (Atlantis) and STS-62 (Columbia) as well as commanding STS-75 (Columbia).pic.twitter.com/dkpo3cDFCt

Wishing astronaut Sam Gemar a #happybirthday! He flew in space 3 times as a mission specialist on STS-38 (Atlantis), STS-48 (Discovery), and STS-62 (Columbia) for more than 580 total hours in space.pic.twitter.com/49VDvDJ1CX

The @MarsPhoenix lander launched #today in 2007 on its nearly 10-month-long journey to Mars. Once on Mars, its mission was to investigate the history of water in the Martian arctic and find evidence about whether Mars could once have supported life.pic.twitter.com/QCL1rSTuoZ

#HappyBirthday to astronaut Mike McCulley! After serving on submarines, he went to @LifeAtPurdue and then became a naval aviator, test pilot, then flew in space as pilot of STS-34 (Atlantis).pic.twitter.com/ALCauy1ZH4

Our stellar #NASAinterns quickly become part of the NASA family, so it's always tough to bid them farewell. Kate is no exception. Thanks for helping share the story of @NASA! pic.twitter.com/bqhSh30XsG

But first, let me take a #selfie! @NASA astronaut Steve Robinson took this pic #OTD in 2005 while conducting an Extravehicular Activity (EVA) on STS-114 (Discovery). During this EVA, Robinson removed 2 protruding gap fillers from between the orbiter's heat shield tiles.pic.twitter.com/Vs8h2lPL7B

We launched the MESSENGER (MErcury Surface, Space ENvironment, GEochemistry, and Ranging) interplanetary probe from @NASAKennedy on #OTD 2004. The probe orbited Mercury from 2011-2015. It is the only space probe to have orbited the closest planet to the Sun.pic.twitter.com/eRkf8XaRVu

The Dynamic Explorer mission began #OTD in 1981 with the launch of Dynamic Explorer 1 and 2. Its objective was to investigate the strong interactive processes between the hot plasmas of Earth's magnetosphere and the cooler, denser plasmas of the ionosphere.pic.twitter.com/6qlQFnkIgY

Representatives of Martin Company briefed Director (of what is now @NASA_Johnson) Robert Gilruth and the Space Task Group on Titan II technical characteristics and expected performance #OTD in 1961. This rocket launched crews during the Gemini program and was a modified ICBM.pic.twitter.com/3EX5yWcwmv

What do you see? Maybe a butterfly or an hourglass? Astronomers call the M2-9 nebula, seen #OTD in 1997 by @NASAHubble, the "Twin Jet Nebula". Its shape and the velocity of gas moving at 322+ km (200+ mi) per second fit the appearance of a super-super-sonic jet exhaust.pic.twitter.com/fvtXz9pmoX

Apollo 15 left the Moon #NOW (1:11 pm ET) in 1971. The ascent of Falcon, Apollo 15's Lunar Module (LM), from the lunar surface back into lunar orbit, was the 1st televised LM ascent.pic.twitter.com/Y7IIgX0tYv

Following 3 launch delays, STS-43 (Atlantis) took to the sky #today (August 2) in 1991. The 5-person crew spent almost 9 days in space, during which the primary payload, Tracking and Data Relay Satellite-5 (TDRS-5), was deployed and sent into geosynchronous orbit.pic.twitter.com/Rz5AFbuTV6

The @USArmy acquired its 1st aircraft #OTD in 1909 when it purchased the Wright Flyer "Model B" (Wright Military Flyer). It was the Wright Brothers' 1st commercial sale, and the 1st airplane purchased and put into service by any government. Photo: @airandspacepic.twitter.com/CDk2ylDGWI