Oh my gosh! I am holding back here from calling you a complete ignoramus Dave, and I don't believe that to be the case but, you certainly have been deceived, I am really surprised you have fallen for such an elaborate hoax/conspiracy theory. I have to ask what is the end game with this notion? What is the premise that you are supporting with this nonsense? I have made some comments below to this video you posted you seem invested into this lie so, I am not going to spend much time on it because Berean has given you enough of actual orbital science to disprove this ignorant illogical fabrication already.
1) It is absolutely clear from the video that the earth is a sphere, and the goofy line the wannabe scientist commentator draws even shows the curvature...just dumb really. :nono:
2) Whoever made the uninformed commentary to this video has never witnessed a launch clearly... the water for the "really big show" as he calls it, is sound suppression, the shock wave from a launch can blow out windows miles away, and cause destruction the the flight vehicle itself so, if the shock wave is not suppressed bad things can happen, it really is a standard procedure to flood the flame trench during engine ignition & launch. The comment asking why a camera is placed on the solid motor & not the orbiter shows really the ignorance of the commentator to understand what he is commenting on. The video is shows more than one camera after separation, given they pan back and forth from the orbiter camera and again to the motor falling back to earth, and yes, science even wants to witness, take data, & record the solid motor's trip back to earth being the motor casings are refurbished and reloaded with solid fuel for a later flight. Witnessing the descent is good data, I am sure there are accelerometers, strain gauges, potentiometers, pressure transducers and other data collection telemetry attached as well...this guy really shouldn't comment on what he doesn't understand, it just makes him & the video commentary all the more foolish. There are cameras & microphones everywhere on these NASA & commercial launches, they even have cameras that watch satellite separation into geosyncronous orbit as far away as 23,000 miles from earth in some cases. I have took the liberty of loading such a video for you below which clearly shows the earth is a sphere.
3) This genius commenting then asserts his next fallacy concerning the speed of the of the flight article which really takes the cake...It begs the question do you always believe everything you see on the internet Dave? The orbiter is actually traveling at 17,500 mph to not only reach orbit but, to maintain it, or did you believe that gravity does not effect satellites? Do you even believe in the force of gravity? The shuttle, or any rocket is traveling at the speed of sound within seconds of launch and is traveling at escape speed 17,500 mph to achieve orbit within 3 minutes, the guy commenting on the video supplied is either purposely or willfully ignorant of space launch.
When you are actually ready to observe an actual satellite launch video that goes way beyond the ISS/low earth orbit, and shows the sphere that is the earth, than watch this video. This video shows from launch, to first stage separation, fairing jettison, second stage traveling ever further away from earth into a geosynchronous orbit, and satellite separation. You will see the entire earth clearly from a distance far enough away to observe the earth is a sphere. I actually worked this launch...enjoy.
Regardless of comments on the video and the questioning of the speed of the rocket, the video speaks for itself and its clearly shows a flat horizon though only a small part of it but the motionless earth beneath it contradicts the ISS.
The second half of the video also clearly shows a flat horizon and motionless earth.
--Dave