When you think about it, Scientists have just replaced the Bibles supernaturalism and “angel beings” with scientific cool sounding beings on other planets. Of course Freud would say they have a problem with their mothers, but really the reason is the longing to have the significance they were created by God for. After all, what Sagan and others are looking for is intelligent life, not some slime dumbbell.
Is it because they recognise they have to account for man being different to the rest of the earth’s creatures? He has intelligence, he reasons, a big part supposedly of what scientists do. And if there’s no God then all that’s left is that somehow this extraterrestrial life arrived here on earth a bit earlier and left a bit here on earth in the form of ‘man’.
Even so, extraterrestrial beings, since they are part of the created cosmos don’t account for the human trait of reasons and intelligence. The Biblical God as the Creation account in Genesis 1 & 2 make clear, is that God created the Universe [ and all imaginary universes and parallel universes ]. He alone is Creator and separate from what He created. Pantheism isn’t right!
Rather You are significant because you are made in God’s image!
For some related ideas read Chuck Colson's review on the film avatar.