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Joined December 2007
Born October 1, 1958
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  1. 1 hour ago

    We know that there are more planets than stars in our galaxy. We're surveying and studying exoplanets (planets beyond our solar system) to learn more about how planets — and life — can develop:

    What is an Exoplanet?
    31 replies 231 retweets 1,259 likes
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  2. 3 hours ago

    "It really increases our science capability." "I think this is really a testament to an amazing amount of work." : In a Q&A for the 10th anniversary of , Kate Rubins & Mike Hopkins reflected on the program's success:

    Space Station Marks the 10th Anniversary of Commercial Crew
    47 replies 155 retweets 1,283 likes
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  3. Retweeted
    6 hours ago

    As & marked another milestone with the relocation of Crew Dragon on , teams also are preparing for the April 22 Crew-2 mission. They're also planning further into 2021 with the Crew-3 launch targeted for no earlier than Oct. 23

    17 replies 143 retweets 1,192 likes
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  4. 4 hours ago

    ⏰ Set your alarms –– Apr. 9, 3:42am ET –– to watch three space travelers, including Mark Vande Hei of , launch to space from Kazakhstan! 🚀 Live NASA TV coverage begins at 2:45am ET. For all the ways you can watch & more details, visit:

    Expedition 65 crew members Russian cosmonaut Pyotr Dubrov of Roscosmos, left, Russian cosmonaut Oleg Novitskiy of Roscosmos, center, and NASA astronaut Mark Vande Hei, pose for a photo during qualification exams at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of their scheduled launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station.
    41 replies 274 retweets 2,084 likes
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  5. 6 hours ago

    The Greenland Ice Sheet’s melting ice is the largest contributor to global sea level rise. New findings by a -supported study contradict long-held views about what influences sliding ice. Find out why this is just the tip of the iceberg:

    This image shows the fringes of the Greenland Ice Sheet, where glaciers are constantly melting, water rushes everywhere through an intricate system of lakes and streams that branch out like slip and slide shoots of super chilled, bright turquoise water.
    52 replies 418 retweets 2,830 likes
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  6. 8 hours ago

    Safe and sound on the surface! Our Ingenuity survived the first cold night on its own, a major milestone on the Red Planet, where surface temps can plunge as low as -130° F (-90° C). Its first flight attempt will be no sooner than April 11:

    Ingenuity helicopter on Mars as viewed by the Perseverance rover’s rear Hazard Camera
    113 replies 1,008 retweets 7,041 likes
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  7. 9 hours ago

    🔴 LIVE: What questions do you have for experts about our 's upcoming first flight? Join a Q&A with the project manager & deputy operations lead of this trailblazing technology demo:

    Ingenuity helicopter on the surface of Mars with rover tracks visible
    67 replies 281 retweets 2,632 likes
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  8. Retweeted
    10 hours ago

    Tune in today April 5, 10am PT (1pm ET/1700 GMT) for a live Q&A w/ experts for updates on the trailblazing tech demo. Find out what the next steps are in its upcoming attempt at the 1st powered, controlled flight on any planet beyond Earth!

    15 replies 150 retweets 1,335 likes
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  9. 11 hours ago

    🎉 Happy 10th anniversary, ! Through this program, public-private partnerships have returned human spaceflight to the United States. missions to the enable even more on our orbiting lab:

    Photograph of International Space Station cupola with NASA insignia as well as logos of partners Boeing and SpaceX
    48 replies 347 retweets 3,052 likes
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  10. Retweeted
    15 hours ago

    ✅ Another first for commercial spaceflight! This morning, 's Crew Dragon spacecraft autonomously undocked from the forward port of the ’s Harmony module at 6:30 a.m. ET and relocated to the space-facing port at 7:08 a.m. ET:

    43 replies 343 retweets 3,183 likes
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  11. 15 hours ago

    At 7:08am ET, soft capture confirmed for the Crew Dragon Resilience at the space-facing port of the 's Harmony module. Today's port relocation is the first for a spacecraft:

    48 replies 614 retweets 5,224 likes
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  12. 15 hours ago

    Why is today's port relocation of the Crew Dragon Resilience happening? It will prepare the for the planned arrival of NASA's Crew-2 mission in just a few weeks, as well as arrival later this summer of a cargo Dragon delivering new solar arrays:

    29 replies 358 retweets 3,103 likes
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  13. 16 hours ago

    With four astronauts aboard, the Crew Dragon undocked from the Harmony module's forward-facing port on the at 6:30am ET. It's relocating to the space-facing port to prepare for the arrival of the next mission & an upcoming cargo delivery:

    44 replies 587 retweets 4,277 likes
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  14. 16 hours ago

    LIVE: The Crew Dragon, with four astronauts aboard, relocates from the Harmony module's forward-facing port to its space-facing port. It's the first-ever port relocation for a spacecraft on :

    49 replies 662 retweets 3,352 likes
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  15. Apr 4

    Coming up: the first-ever port relocation for a spacecraft on the . With four astronauts aboard, the Crew Dragon Resilience will undock, then redock at the Harmony module's space-facing port. 📺 Watch at 6am ET:

    Crew Dragon approaches space station for docking
    123 replies 922 retweets 7,917 likes
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  16. Apr 4

    2️⃣ a drawing inside the left front wheel that shows exploration is in our DNA – You can see it below, before leaving Earth (left) and faintly visible in the shadowed wheel on Mars (right). See other hidden surprises on the rover:

    Pre-launch closeup photo of DNA artwork on rover wheel
    Hazcam image from Perseverance's Sol 31 on Mars showing rover wheel closeup at left and rocky Mars surface below
    50 replies 309 retweets 3,453 likes
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  17. Apr 4

    Did you spot them? The two other Easter eggs on board are: 1️⃣ a unique ID on the mission nameplate, like your car’s VIN number –

    Two name plates mounted on the Mars Perseverance rover’s robotic arm are visible in this composite image.
    Closeup photograph of Perseverance rover name plate: the mission name, “Mars 2020,” is shown on the rover's upper arm.
    105 replies 625 retweets 5,362 likes
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  18. Retweeted
    Apr 3

    touchdown confirmed! Its 293 million mile (471 million km) journey aboard ended with the final drop of 4 inches (10 cm) from the rover's belly to the surface of Mars today. Next milestone? Survive the night.

    705 replies 8,260 retweets 43,603 likes
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  19. Apr 3

    😍 New processing methods were applied to this image of the Veil Nebula. Emissions from doubly ionized oxygen (blue hues), ionized hydrogen, & ionized nitrogen (red hues) are made visible. Lift the veil of this cosmic phenomena:

    Image of Veil Nebula with new post-processing methods have further enhanced details of emissions from doubly ionized oxygen, ionized hydrogen, and ionized nitrogen.
    167 replies 1,810 retweets 12,095 likes
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  20. Apr 3

    🧪 The 1st long-duration biology experiment in deep space completed its assembly and tests — bringing it one step closer to launching on our I mission around the Moon! Get more details on BioSentinel’s groundbreaking mission here:

    A scientist checks the assembly of BioSentinel's CubeSat experiment.
    46 replies 308 retweets 3,455 likes
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