Second thing I learned was that water isn't essential to life. Life could exist in other a soup of others chemicals too, such as liquid nitrogen or even mixtures of gases. Life could even exist without light, which it certainly does in the deepest parts of Earths oceans. Some planets are only gaseous, while others are too cold to support liquid water, but might be able to support liquid nitrogen. The point is, the possibilities are endless, and almost every shape and form of life must exist somewhere.
Hawking is also skeptical of supposed "encounters" with aliens that are occasionally reported on earth. To him, it makes no sense for aliens to take the time to travel across the galaxy only to arrive on earth unannounced and secretly find lonely and abduct them. Hawking fears that if aliens do come to earth, it won't be for peaceful purposes.
It was an interesting documentary and certainly fun to watch. After it was over, I was wondering if the existence of aliens would refute or confirm the existence of God to believers on Earth.
This question has almost certainly has been posed to religious scholars. Do any of my readers know the answer? If you do end up reading my query, and can point me in the right direction, please do so in the comments!