Welcome to Last Minute Launch Threads, where I, @Ultimate Steve, post about rocket launches that nobody has made threads for! (Thread #6-ish, #1 since I started counting.) Today, we will see the launch of Proton with the EchoStar 21 satellite. TL;WR: Livestream! Long version: This is Proton.       Even if you follow space often, you may not have heard of it. The reason for this is that it hasn't flown in a while. This is because of a string of failures Pro