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LIVE NOW: Our experts are answering your questions about what happens to the human body when it spends a #YearInSpace. Head over to our @Reddit_AMA to ask questions about our yearlong study of the DNA of identical twin @NASA_Astronauts: https://www.reddit.com/r/IAmA/comments/bc42xt/we_are_experts_working_on_the_twins_study_to/ …pic.twitter.com/XV80e88miJ

What exactly happens to the human body during spaceflight? Join our experts for a @Reddit_AMA at 4pm ET to ask questions about a study that compared the DNA of identical twin @NASA_Astronauts. Details: https://www.nasa.gov/press-release/nasa-hosts-media-teleconference-to-share-twins-study-results …pic.twitter.com/u2dpWfNyQw

LIVE: Ready to watch a spacecraft land on the Moon? Today, @TeamSpaceIL's #Beresheet attempts to become the 1st private robotic mission to touch down on the lunar surface. On board: our science instrument to help future Moon landers navigate. Watch: https://go.nasa.gov/2G7alFo pic.twitter.com/76McE2N4ff

LIVE NOW: Listen in as researchers discuss the results of the Twins Study that are helping scientists better understand the impacts of spaceflight on the human body. Listen now: http://www.nasa.gov/live pic.twitter.com/ZuM7Lb03Xn

At 2pm ET: The landmark Twins Study brought researchers together to observe what physiological, molecular and cognitive changes happen to a human body from exposure to spaceflight hazards. Listen to what they learned from an astronaut's #YearInSpace: https://go.nasa.gov/2G46V6m pic.twitter.com/9YM1K9QfmT

Today, for the 1st time, a private robotic spacecraft attempts a Moon landing! @TeamSpaceIL's #Beresheet carries one of our science instruments — an example of how we'll work with partners to pave the way to returning astronauts to the Moon by 2024. More: https://go.nasa.gov/2G6SsXg pic.twitter.com/QpH3SJhqWF

To understand the impacts of spaceflight, we compared changes in gene expression for identical twin astronauts - one who spent a #YearInSpace & one who remained on Earth. Discover what our experts learned as we release our Twins Study tomorrow: https://go.nasa.gov/2UvRRsc pic.twitter.com/EqmwHdkmM3

We're nominated for seven @TheWebbyAwards for our work bringing more space to you — but we need your vote to win! Here's how to vote for our websites and social media: https://go.nasa.gov/2G1UAj4 pic.twitter.com/doyGo7cKNF

Bullseye For the 1st time, two of our CubeSats created a laser link in space! Their result lays the path forward for creating a constellation of small satellites, working together to transfer more data in orbit around the Earth and Moon. Check it out: https://go.nasa.gov/2G2LQcC pic.twitter.com/zReWORUCKh

Flying robot prototypes Nanoparticle delivery systems Carbon dioxide scrubber All this & more will be launched on @northropgrumman’s #Cygnus spacecraft from @NASA_Wallops on April 17. Listen in to discover what’s on board today at 1pm ET: https://go.nasa.gov/2Ut1lED pic.twitter.com/FZFtU85lJn

What does today's black hole image news mean? Our @ChandraXRay Observatory team puts it into perspective and shares just what a difficult feat it was for @NSF and @EHTelescope to obtain the new black hole image. Read more about #EHTBlackHole: https://go.nasa.gov/2G53mgk pic.twitter.com/TQD8HSdbGG

At 10:30am ET: Ask your black hole questions to our @ChandraXRay Observatory scientists who study these cosmic wonders in X-Ray wavelengths. Get sucked in and get your black hole questions answered: https://twitter.com/chandraxray pic.twitter.com/PjVXUpL08i

In a historic feat by @EHTelescope & @NSF, a black hole image has been captured for the 1st time. Several of our missions observed the same black hole using different light wavelengths and collected data to understand the black hole's environment. Details: https://go.nasa.gov/2Uwj1PF pic.twitter.com/4PhH1bfHxc

Hearing about #BlackHoles this morning? Here's a refresher on what a black hole IS. It's a place where a large amount of mass has been squeezed into a tiny space. The gravity is so strong that not even light can escape from a black hole. Learn more: https://go.nasa.gov/2Us0m7v pic.twitter.com/RVuuxpaJPG

"Keep eating your fruits and veggies." It's good advice on Earth and in space! In the latest Sciencecast, learn how spaceflight affects astronauts' nutritional needs and how we ensure they have a healthy diet on long duration missions: https://go.nasa.gov/2UrufVQ pic.twitter.com/DbtJKtg0w0