Do you think other life exists in the universe, if so, do you think they have visited earth?

Answer 1

The Universe is too big and contains thousandths of galaxies.Do you yourself can think that among these thousandths of galaxies only one little small planet exists?No way. Even it is proved by the scientists that we are after all not alone.But it is not likely to be possible that these other living things, so called aliens have visited earth because the distance even between two nearest galaxies or planets is so much that it sometimes even can't be measured in light years{ the term used for measuring distances in space.}.So right now no such technology has been invented that this distance is covered by those aliens and if it has been built then they must be very powerful from us and must have took over our planet + they should have visited earth many times.

Answer 2

Given that there's more planets in the visible universe than there are grains of sand in all the beaches of Earth, and given that self-organized complexity is quite common, I think there's a vast number of "habitable" planets, and life on such planets would be the rule rather than the exception. Intelligent life capable of space travel is another matter. If Earth ever had such visitors, the odds are that it happened in the prehistoric past long before there were any humans. The Earth is 4.65 billion years old, and cro-magnons have been around for much less than a million.

Answer 3

I believe life exists in great number throughout the universe.
Technological societies that would stand a chance to visit earth are very short lived.
We may one day intercept a signal transmitted by them but we will never see or have any dialog with them.

Answer 4

Personally, I'd like to believe that other life exists, but the odds are sorely against it. The possibility of bacteria/algae-like organisms is ridiculously tiny, thanks to the very specific conditions life appears to need to survive, and the possibility of intelligent life, let alone slugs, etc, actually evolving out there is next to nothing. I mean ~1x10^-73 or so.
That being said, no, I don't think any alien life has visited earth...

Answer 5

I am sure that there is other life in the universe, but i realy doubt that they have visited us. We would just have noticed! If i would be a a alien travel hundret of lightyears through space, i would definetly not hide behind the moon, or help to support some strange conspiracy, like the bad aliens in X-Files do.

I guess they just have not found us, yet!

Answer 6

Yes. Of course we are not alone. It would be pompous and presumptuous of man to think that he was the only or the smartest in the universe.




And we humans are feral to this planet.
And our ancestors keep an eye on us.

Answer 7

life exists can be. Visiting not known yet.

Answer 8

of course there are other life forms in the galaxy. it would pretty sad if there wasn't.
if they are already here, i wouldn't know. either they keep to them self or its a cover up.