No.
yes
NO!
Yes indeed they have.
Apparently, there have been strange sightings, but there has been no evidence or proof that an extraterrestrial being (alien) has actually been seen.
has there ever been...go back to school
yes
there have been five shark attacks ever to occur in Ireland.
So far, there has been NO CONFIRMED FINDING of any alien life - caught or otherwise.
No. Nor even a far one
There is no evidence of any kind to support the idea.
the history of shoes is that they have been around for ever