jetΓÇÖs alignment with the nebula ishighly suggestive. Compact objects like the one in SS433 are generally thought to be produced in super- nova explosions. If a supernova did not occur, where did the object come from? And has SS433 been around long enough to eject all the material found in W50? And where, if not from a supernova explosion, did all the material come from in the first place? Whatever the answer, it seems certain that W50 and SS433 have the same origin and are intimately related.
