24 hour days that are the same before the sun as they were after the sun. There is no point in the time being different before or after the sun.
Given that the universe is 6000 years old and the stars were all made as window dressings on the 4th day. In Revelation 6 the stars will be instantly turned into sparkles and fall to the earth because the earth is the center of creation.
Given these biblical truths there is no reason to think for one second that there is life on other planets.
However, the Pope doesn't seen to believe any of these things.
Even if we stipulated the above as facts, it would not constitute an argument against life on other planets. There's no logical connection.
BTW I don't have nearly enough knowledge to justify having a firm opinion one way or the other.