Oumuamua is an object that passed through the solar system in 2017 and was initially thought to be an asteroid. However, its unusual shape and trajectory led some scientists to suggest that it could be an alien spacecraft.
Scientists from the SETI Institute (Search for Extraterrestrial Intelligence) proposed that Oumuamua could be a lightsail, a type of spacecraft that uses the pressure of sunlight to propel itself through space. They proposed that Oumuamua might be a discarded lightsail from an alien civilization.
However, most scientists believe that Oumuamua is a natural object, possibly a fragment of a larger body that was ejected from its own star system. Studies of Oumuamua’s properties, such as its size, shape, and rotation, suggest that it is a fragment of a larger body that was ejected from its own star system. While the possibility of Oumuamua being an alien spacecraft cannot be ruled out, it is considered as highly unlikely as per the current understanding of the data available.
