Though extraterrestrial life has never been discovered. UFO sightings have been seen over 120 times.Lots of people believe aliens exist including The Pentagon that has has been secretly investigating UFOs since 2007 according to an article by The Guardian. There’s no actual video proof that UFO’s or Aliens exist.
I think aliens are just something that exists for the human mind to be more creative. So in conclusion aliens do not exist.
The Pentagon hides everything because they wanna put the information out once they confirm their theory is right. They don’t have 100% proof that their theory is right.