That’s a Lot of Extra Cargo
Now, I know many people probably wouldn’t think too much about this, but take a second to consider how careful NASA is about how much they send into space. Any extra weight is pared down to bare bones to ensure fuel longevity. Sure, tampons don’t weigh much, but they’re meticulous.

This sentence right here means that no one knew or bothered to ask Sally Ride how much she would need because they surely wouldn’t have sent 100 of them if they’d known. I bet she laughed herself silly when she saw the boxes. I know I would have!
