Do people remember the Challenger explosion? If you were alive, probably so, although I think that tragedy has now been obscured a bit in our cultural memory because of the more recent 9/11 attacks. But Netflix has devoted a four-part docuseries to exploring what happened, what went wrong and what NASA learned from the disaster. My big takeaway: After we landed on the moon, the space agency thought it could do no wrong. That arrogance proved deadly. My piece is up at MEL.
