40 years ago today, the Challenger space shuttle exploded, killing all seven crew members. @TheAutopian@flipboard.com's Jason Torchinsky writes about his memories of the day, the impact the disaster had, why it happened, and what it taught him about hope and humanity. "Maybe knowing that things can go wrong, horribly wrong, is a reality we should all keep in the back of our minds, and find a way to know it’s there and keep going anyway." https://flip.it/50b7_r #History #SpaceTravel #Challenger #InMemoriam