Pesahim 94a and Pesahim 94b, on the distance that counts as derech rechoka, as too far to have to bring a Pesah sacrifice, with a digression to the size of the earth, the heavens, and the relationship between the sun, stars, and earth.
Pesahim 94a and Pesahim 94b, on the distance that counts as derech rechoka, as too far to have to bring a Pesah sacrifice, with a digression to the size of the earth, the heavens, and the relationship between the sun, stars, and earth.