With sightings of UFOs in space we define alleged sightings of unidentified objects that would have occurred by astronauts during space missions. Some of the sightings would have been only visual, while for others there would be photos or movies.

According to several experts in astronautics, some of the sightings reported in magazines, books and websites of ufology have never happened and are the result of rumors or in some cases of invented stories, while for the cases that have actually occurred it is possible to find prosaic explanations . For its part, NASA has stated that during the US space missions no evidence emerged for the existence of extraterrestrial spacecraft

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