“Day of Remembrance 2018” was uploaded to Flickr

On the last Thursday in January, NASA pays tribute to the crews of Apollo 1 and space shuttles Challenger and Columbia, as well as other NASA colleagues who lost their lives while furthering the cause of exploration and discovery. via NASA ift.tt/2GiIbGQ
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Day of Remembrance 2018 was taken on January 25, 2018 at 05:37AM

“NASA Observes Day of Remembrance” was uploaded to Flickr

Chuck Resnik, brother of Space Shuttle Challenger astronaut Judith Resnik, left, and NASA Administrator Charles Bolden, right, visit the Space Shuttle Challenger Memorial during a wreath laying ceremony that was part of NASA's Day of Remembrance on the 30th anniversary of the Challenger accident, January 28, 2016, at Arlington National Cemetery. via NASA ift.tt/1OSseWB
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NASA Observes Day of Remembrance was taken on January 28, 2016 at 05:25PM