life on other planets

[Randy Carson]

Aliens from outer-space would not be descendants of Adam so they would have no need of a savior.

Correct. Unless they had some "fall" of their own.

There is no universe in the Bible.

Possibly. The word "universe" appears 55 times in the NIV. Here's one example:

Hebrews 1:1-3
1 In the past God spoke to our ancestors through the prophets at many times and in various ways, 2 but in these last days he has spoken to us by his Son, whom he appointed heir of all things, and through whom also he made the universe.

In fact, I find no evidence that the biblical writers had the slightest idea of any other planets.  In the Bible, there's only the Earth, with the sun and the moon and the stars right here in the Earth's atmosphere. Above that is heaven.

Probably. But consider:

Matthew 24:29
“Immediately after the distress of those days “‘the sun will be darkened, and the moon will not give its light; the stars will fall from the sky, and the heavenly bodies will be shaken.’

Sun, moon and stars have been mentioned; then Matthew mentions other "heavenly bodies".