Rabbi Ben-Zion Firrer asked whether Torah Law must be observed in space, since Deuteronomy 12:1 says one should follow the Commandments "all of the days which you are alive on this earth."
What defines "on this earth" as it relates to the halachic necessity of performing mitzvot?
Presumably the earth's atmosphere would count as "earth," but why? You are not literally "on [the] earth" when you are in the atmosphere.
And what about Space outside the atmosphere? Do the Commandments not apply there?
From a logical standpoint, it seems absurd that one might be allowed to murder or worship idols while aboard an airplane, or a rocket ship, for that matter. But does halacha itself account for these situations in any reliable way?