An Astronaut Claims That Aliens Have Never Visited Earth

According to Alan Bean,one out of 12 people who had walked the moon,insists he has good reasons for believing that we have never had a visitation.

He said,There are so many billion of stars and these stars have planets around them,so there must be statistically many planets around many stars that have formed life and continuing he said,

Civilizations that are more advanced are more altruistic and friendly,like earth,which is better than it used to be;so they would have landed and said,we come in peace and we know from our studies you have cancer that kills people,we solved that problem 50years ago,here is the gadget we put on a person's chest that will cure it ,we will show you how to make it.