Because the alien race would present you with incontrovertible proof of the earth being millions of years old.
What does an alien race have to do with the notion of the earth being millions of years old? What is the connection?
Aliens, by definition, are not from the earth, so how would their existence in any way reflect upon the earth's age?
The fossil record is a testament to the Deluge, afterall, sedimentary means deposited in water.
?Originally Posted by IceAgeCivilizations
the geologic column is all water deposited sediments