That is currently unknown. There may be, but there is no evidence - one way or another.
What you mean is, 'When will the aliens return'? ...or why are aliens upon us. you must mean when will the aliens take over, well what I know is that they wont take over the world or galexy while were alive.
We dont actually know, but people who have been under hypnosis say that they were abducted by aliens. Naturaly the first question they asked was where do they come from. The aliens show them a map and the map is of the galexy 2 over from us.
The Milky Way.
The Milky Way.
NO
Quorts
it can vary to other galexy nut to Andromeda galexy it 2500000 light years away from earth
Yes.
the galexy is
milky way
It is on the gardens of the galexy the tree man
It is on the gardens of the galexy the tree man