Then, to which "mitzvot" are binding to Jews who happen to find themselves in outer space ?
So commandments are binding not only in Eretz Yisrael but in the Diaspora as well. There is ( Deut. 12:1 ) a verse ".....all the days which you are alive on the earth." It would indicate that man is exempt from performance of mitzvot in places other than those which are "on the earth". Theoretical mitzvot<i/> contingent upon "time" cannot be performed on the moon, since "time" as measured by man is a twenty-four-hour day-night sequence. What then, is a lunar "day" ? The observance is defined in terms of terrestial cycles of light and darkness ?
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