#8: Ancient Aliens
Since space is a widely-known concept, people speculate about life on other planets. Aliens are a topic that has always fascinated and horrified us as a society. The whole craze about aliens gained prominence in the 1950s. At that time, more and more people were coming forward with stories of weird alien abduction experiences.

While some people may take their dedication to aliens a bit too far, aliens seem likely to exist. The universe is more extensive than we can even conceptualize. There’s no way Earth is the only place out there with intelligent life, right? According to David Kipping of Columbia University, there’s a 75% probability of life elsewhere. Out of that extraterrestrial life, there’s a 60% likelihood that they’d be intelligent. Pretty cool.