My Dad and I went to see the launch. We were at the famous Banana Creek viewing area at Kennedy. Here's a video taken with my Iphone if anyone is interested what it looked and sounded like from there. Sorry it wasn't done with better equipment, maybe next time.
It's a great video. I love the huge crowd experiencing the launch. Who was doing the voice over? Someone nearby, someone from NASA, or someone from Banana Creek? Your video gave it the personal touch that the official videos sometimes lack. Thanks for sharing.
I expect the aluminum was actually burning.
I looked it up and aluminum does have a very low burning and melting point. It's been mentioned that the fire retardant coating was what we saw burning off for the brief moment the boosters video stayed up. However, there was another 30 seconds after that moment of intense friction generating more heat. SpaceX, as Elon mentioned, will need to get a lot better at a fire retardant paint or coatings if they don't want to be recoating or repainting a booster after every landing. This was a hot landing but it seemed the new coating did not do as well as boosters with an unused fresh coating.
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