The footage is from the ISS, and shows a huge, disc-shaped UFO spinning toward the station.
But what happens next is even more interesting; the camera is cut to the inside of ISS where it appears the astronauts are viewing the object on a video monitor. Then the feed is cut until the object is gone.
According to the publisher, the file has now been removed from the NASA site.
This is dummy text. It is not meant to be read. Accordingly, it is difficult to figure out when to end it. But then, this is dummy text. It is not meant to be read. Period.