Was NASA spacewalk & Moon mission real?

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According to a video portrayed in Discovery we find that the flag of US which was hosted on Lunarland was flickering with air while we know that atmosphere does not exist elsewhere so how it was possible . So philosophers does not agree on that and are proving science wrong with its own logic. Space walk is a bit true as zero gravity shown in the video is the proof of it. What about Columbia? Tell me if you (mylotters know something about it.)?