For me, the high point of the video occurs around 2.55 where Sagan seems to experience and express Psalm 8 humility: “It has been said that astronomy is a humbling and character-building experience. There is perhaps no better demonstration of the folly of human conceits than this distant image of our tiny world.”
However, I was especially stunned by his desperate words around the 2.20 mark: ”In our obscurity, in all this vastness, there is no hint that help will come from elsewhere to save us from ourselves.”
I've rarely read or heard anything more poignant than Sagan's words. The famous astronomer, astrophysicist, and cosmologist understood so well communicated our insignificance in the grand scheme of the universe. Yet, God created man in His image and, though marred by the fall, we all bear that image including Carl Sagan. Sagan knows that there must be purpose. He begs for us to lead lives of significance and concern for one another.
But without a Creator, Redeemer, Savior, his pleas have no foundation. A man of extreme science makes a leap to moralism that has no underpinnings without the God of the Bible. The world needs Jesus. The world cries out for Jesus. Our lives as Christian must be dedicated to telling all we can about Him whom they hope exist. They need to know that He does.