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Cracks growing across Antarctica’s Brunt Ice Shelf are poised to release an iceberg with an area about twice size of New York City. It is not yet clear how the remaining ice shelf will respond following the break, posing an uncertain future for scientific infrastructure and a human presence on the shelf that was first established in 1955. via NASA https://ift.tt/2SPiuHC

This preflight image from Feb. 6, 2019, shows NASA astronauts Mike Fincke and Nicole Mann and Boeing astronaut Chris Ferguson during spacewalk preparations and training inside the Space Station Airlock Mockup at NASA's Johnson Space Center in Houston. via NASA https://go.nasa.gov/2IlJIRI

Vice President Mike Pence visits the Space Shuttle Challenger Memorial after a wreath laying ceremony that was part of NASA's Day of Remembrance, Thursday, Feb. 7, 2019, at Arlington National Cemetery in Arlington, Va. via NASA https://go.nasa.gov/2DZuRba
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