Not long after the Curiosity rover landed on Mars, it sent back this video showing the Martian horizon. In the background we see two unknown flying objects. The first seems to ascend from the surface on the left. The second flies completely across the horizon. What are they? Alien craft? Our own Martian satellites? Meteors? Watch the video.
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I can guarantee you if Nasa thought this was really an alien flying object, we wouldn’t have access to the film.
What if the light observed was a Phobos or Deimos pass?