User:Tikkutakku

Aliens:

Actually our earth is a part of solar system.In the solar system in certain planet organism was existed.That planet is our earth.Similarly there are many galaxies in the space.In any other galaxy like our milky way there might be a planet which is comfortable for organisms.So if the organisms are there,they might be some what similar to us and that's why somebody named them as aliens.But till know there is no perfect proof for existence of aliens.