BT Ber 58b(47) :גמירי דלא עבר כיסלא דאי עבר כיסלא חרוב עלם‏ : it is taught that (the comet) does not pass through Orion, for if it had passed through Orion, the world would have been destroyed
See the entire entry for ksel, kislā n.m. Orion

BT Ber 58b(47) :נהירן לי שבילי דרקיעא כשבילי דנהרדעא בר מכוכבא דשביט‏ : the heavenly tracks (i.e. orbits) are as familiar to me as the paths of Nehardea, except for a comet
See the entire entry for šbṭ vb. D to hammer; to beat