Once the people who study the planets, stars, galaxies, black holes, worm holes, dark matter..... & signs of life beyond the earth I'll be much more likely to believe it. Of course there might be aliens among us right now but none of us are aware nor have the ability to be aware. What I won't accept is that the government is the only entity to know. They can't even keep the economy on track or win a war against enemies who have a fraction of the weapons. They are one of the most useless & incompetent organizations in history.