Yeah, I just could not help but pointing it out. I know that most people will use that word as a synonym for mass. As I said, I was not trying to criticize. I love your post it got me thinking. But I think your assumptions might be incorrect. Not saying your calculation is wrong. But even with something as mystical as the traveler I don't know if it would have half the mass of the sun. It would probably collapse under its own mass and become a black hole, no? ... But maybe space magic prevents that from happening.... But yes, I wonder about the origin of the traveler, too. I hope some things will be revealed to us in the future.