nasas-failures-robotic-space-missions-that-didnt-go-as-planned

https://astronomy.com/news/2020/12/nasas-failures-robotic-space-missions-that-didnt-go-as-planned?utm_source=Yesmail&utm_medium=email&utm_email= [login to see] &utm_campaign=News0_ASY_201218_000000
Nasa's missions that didn't go as planned. Just keep trying!
"not every NASA mission has gone as planned. They’ve had their share of failures. Yet, almost every scientist will tell you that they learn (almost) as much from their failures as they do from their successes. And robotic missions, in particular, offer prime opportunities to push the limits of what’s possible — without risking human lives"