Is there any reason that we couldn't believe in life on another planet somewhere? Is there any source that indicates to the contrary?
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In the linked article, Rabbi Aryeh Kaplan sources and discusses opinions on both sides of the argument, bringing various proofs and questions.
Chasdai Crescas says aliens can exist, Yosef Albo said there cannot be any other beings with free will, apparently the only objection with believing in aliens centers around this issue of free will. Rabbi Kaplan also quotes the Seffer HaBris who took the middle road saying they exist, but do not have free will. Rabbi Kaplan goes on to say that the Zohar seems to support belief in extra terrestrial life.
The Sefer Hikrim brings his rebbe which held that there are no aliens. However the Sefer Hikrim himself argues and holds that there are aliens. He brings a proof from the possuk in Shoftim which says "oro mroz", which the gamera in Moed Katan (Rashi brings this) says roz is a star, and the passuk concludes "arur yoshveha" cursed are its inhabitants, clearly there is some form of life in space.
To say that there cannot be other creations or life existing elsewhere in the universe would be placing a limitation on Hashem, which would be kefira (heresy).
protected by Shmuel Brin Aug 20 '14 at 1:40
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