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'Arrokoth': a Native American term meaning “sky” in the Powhatan/Algonquian language. With consent from Powhatan Tribal elders and representatives, it's now the official name for the Kuiper Belt object visited by
@NASANewHorizons. About today's ceremony: https://go.nasa.gov/2qRLFN5 pic.twitter.com/ni7TGq8zYE
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Over 6 years, a chemistry lab inside the belly of
@MarsCuriosity has inhaled Martian air & analyzed its composition. Scientists found that the nitrogen & argon follow a predictable seasonal pattern — but not oxygen. Learn about the newest Martian mystery: https://go.nasa.gov/34RbxY8 pic.twitter.com/yy43UdeuSYThanks. Twitter will use this to make your timeline better. UndoUndo -
LIVE: The second briefing on upcoming spacewalks by
@AstroDrewMorgan &@astro_luca to repair the Alpha Magnetic Spectrometer on@Space_Station. Learn about the specialized tools used for this complex repair and the goals of each spacewalk. Watch: https://go.nasa.gov/2CC54EH pic.twitter.com/pZheB33YGi
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LIVE: Experts discuss upcoming spacewalks by
@AstroDrewMorgan &@astro_luca to repair the Alpha Magnetic Spectrometer instrument on@Space_Station. These will be the most complex spacewalks of this kind since the servicing of the Hubble telescope. Watch: https://go.nasa.gov/32DtAQ3 pic.twitter.com/Kl9KuauEtz
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In upcoming spacewalks,
@AstroDrewMorgan and@astro_luca will venture outside@Space_Station to repair the Alpha Magnetic Spectrometer. Learn more in today's briefings: 2pm ET Program and science overview 3pm ET Tools, techniques & objectives Watch: https://go.nasa.gov/2CBJKiD pic.twitter.com/DsEx0hSsOw
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What is Gateway
? This lunar outpost will be where our #Artemis astronauts live & work around the Moon, just about a 5-day, 250,000-mile commute from Earth. What#AskNASA questions do you have about Gateway? Send them & check back for responses! More: https://go.nasa.gov/2QbtRap pic.twitter.com/NYtCtyqQeg
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Q: What did Mercury say when it was asked to line up between Earth & the Sun? A: I'll pass!
We witnessed a rare treat during today's #MercuryTransit, which only happens ~13 times a century! Revel in the views captured our@NASASun-observing satellite: https://go.nasa.gov/32IZk6I pic.twitter.com/UqhYHTpAQmThanks. Twitter will use this to make your timeline better. UndoUndo -
NASA Retweeted
The world’s reaction was as humbling as its views. Inspired that a day doing our job could mean the honor of conducting the first
#AllWomanSpacewalk, here is a glimpse of that moment and what it meant to us. https://wapo.st/33NBN5X pic.twitter.com/1fbmFuQrC3Thanks. Twitter will use this to make your timeline better. UndoUndo -
NASA Retweeted
That's all, folks! Mercury has left the disk of the Sun, completing the transit. The next Mercury transit is in 2032 — so in the meantime, you can read up on
@NASAUniverse's TESS mission, which uses transits in other star systems to look for exoplanets! http://nasa.gov/tess pic.twitter.com/zRLdYnHiazThanks. Twitter will use this to make your timeline better. UndoUndo -
NASA Retweeted
The planet Mercury is seen in silhouette, center, as it transits across the face of the Sun, behind the Washington Monument, Monday, Nov. 11, 2019, in Washington. Mercury’s last transit was in 2016. The next won’t happen again until 2032. More: https://flic.kr/s/aHsmJiKgGE pic.twitter.com/e5rHvDGsGB
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NASA Retweeted
Just a few more minutes in today's
#MercuryTransit! Watch Mercury complete its journey across the Sun through the eyes of our Solar Dynamics Observatory satellite
http://mercurytransit.gsfc.nasa.gov . SDO keeps a constant eye on the Sun, so it has a prime view for transits like this! 
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NASA Retweeted
As the US observes
#VeteransDay,@NASA astronaut Chris Cassidy discusses how his@USNavy SEAL training impacts his astronaut experience ahead of his April 2020 mission to the station.pic.twitter.com/Wa6Ih7lOz7How does Your Navy Seal Experience Impact You as an Astronaut?As the U.S. observes Veterans Day, NASA astronaut Chris Cassidy discusses how his U.S. Navy SEAL training impacts his astronaut experience ahead of his April 2020 mission to the station.Thanks. Twitter will use this to make your timeline better. UndoUndo -
On
#VeteransDay, we take a moment to salute those who serve and have served in our nation’s military, including some of our@NASA_Astronauts &@NASApeople. Here's a message from@AstroDrewMorgan who also serves as an officer in the@USArmy:https://twitter.com/AstroDrewMorgan/status/1193870890569781249 …
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NASA Retweeted
Remember when the Moon blocked the Sun? Today’s Mercury transit is kind of like that. Mercury passes between the Sun and Earth, but it is MUCH farther away than the Moon, so it appears as a tiny dot blocking a tiny bit of light.https://twitter.com/NASASolarSystem/status/1192489472262205440 …
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For the next few hours, Mercury will pass between the Earth & the Sun, silhouetting it against our home star. As you watch the
#MercuryTransit: Use solar viewing glasses
Don't look directly at the Sun
Use a telescope with solar filters
More: https://go.nasa.gov/34RfxIs pic.twitter.com/HmDGbC7ypmThanks. Twitter will use this to make your timeline better. UndoUndo -
NASA Retweeted
Happening Now: The planet Mercury passes directly in front of the Sun!
This view from Washington, DC this morning. See more #MercuryTransit views: http://go.nasa.gov/mercurytransit (for this image on Flickr: https://flic.kr/p/2hJezbh )pic.twitter.com/VNhrx9YQ9g
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NASA Retweeted
Mercury transits are relatively rare — the next one isn't until 2032! Watch Mercury make its trek across the Sun today at http://mercurytransit.gsfc.nasa.gov
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Happening Now: The planet Mercury passes directly in front of the Sun!
This front-row seat view is from our @NASASun-observing satellite that keeps a constant eye on the Sun from its position in orbit around Earth. See more#MercuryTransit views: http://go.nasa.gov/mercurytransit pic.twitter.com/tkMrTTUgu2Thanks. Twitter will use this to make your timeline better. UndoUndo -
Good morning, Sunshine!
Today, Mercury will pass between the Earth & the Sun, silhouetting it against our home star. This passage will begin at approximately 7:35am ET and last for more than five hours. Here's how you can watch the #MercuryTransit: https://go.nasa.gov/2O4MYR4 pic.twitter.com/xnE9QdNuMuThanks. Twitter will use this to make your timeline better. UndoUndo -
Tomorrow, Earthlings will be treated to a rare cosmic event — a Mercury transit.
From our perspective, the planet Mercury will look like a tiny black dot gliding across the Sun’s face. Discover how you can safely watch the transit: https://go.nasa.gov/2rrDpDP pic.twitter.com/RErXcpQSbA
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