This Week at NASA: Remembering NASA's Fallen Heroes

June Scobee-Rodgers, widow of Challenger Commander Dick Scobee, right, speaks with NASA Administrator Jim Bridenstine, left, Chuck Resnik, brother of Challenger Mission Specialist Judith Resnik, second left, and Vice President Mike Pence at 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. Wreaths were laid in memory of those men and women who lost their lives in the quest for space exploration. Photo Credit: NASA/Aubrey Gemignani.

Remembering our fallen heroes, a milestone for our InSight lander on Mars, and, data released on our global temperature ... a few of the stories to tell you about - This Week at NASA.

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