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Since the launch of the manned space program more than 50 years ago, cameras aboard NASA spacecrafts have captured thousands of images that have been shared publicly to the delight of millions.
Many show stars, views of Earth and other expected sights.
However, hundreds of these pictures reveal imagery that leave scientists scratching their heads.
NASA’S Unexplained Files explores these mysteries and the latest evidence for life beyond Earth.
Can these events be explained through science and detective work? Or have NASA's cameras potentially captured the first traces of extraterrestrial life?