I'd say if aliens actually exist, then since the dawn of man with how many sightings are claimed even in today's skeptical times.
If you're asking for when did people first see "aliens" in the literal sense of people actually thinking it was an alien they saw and not an act of one of their mythological Gods, I'd say since the dawn of the scientific era.
I suggest you look up the origins of the term "Alien" when referring to extra terrestrial beings and the origins of the idea of living beings beyond our planet, and the source and/or beginning of that would be your answer.
There is no concrete evidence to suggest that people have actually seen aliens. Reports of alien sightings and encounters are largely anecdotal and remain unverified. The idea of aliens visiting Earth is still a topic of speculation and debate within the scientific community.
The first people to live in a region are commonly referred to as indigenous or native peoples.
is it 50 people or 100 people that go in free the first day Santa's enchanted forest opens
Yes, it is possible to dream in color.
1002
The first country in the world to have a population over a billion people was China, reaching this milestone around the mid-20th century.
Yes, there are really people who say that.
Because most people dont believe aliens exist and it's never been proven that they do.
First we have to know whether or not they exist.
We are aliens. Why aren't aliens people? It all depends which side your on
No aliens are not real. if they were still no, like Darkvader says " I WILL RULE THE EARTH!" sorry but if there were aliens the mars rover will see those green things.
Adam and Eve , or aliens ( ;
it depends on your imagination because some people might believe that aliens exist others don't its all about your own imagination on how you see it
it is possible that aliens are real because space in huge they has to be life some where just people are scared to go and see
Depends on your meaning of "aliens"
No you can't see it. It is superficial, but you can sense/feel it. It is like believing in ghosts or aliens, which many people do and don't.
No,There isn't aliens in GTA SA or anywhere around this world. The reason why you see videos about aliens is because people just use you for more views,so their videos would go viral. So whatever people say about aliens don't believe them. :)
aliens, Might exist but their are rumours that they probe people.