Have a glass of water, perhaps?

It's okay I'll just scoop up all my brains off the floor and return to not thinking about math and physics. :P In all seriousness kudos on your calculations, that's pretty interesting. I'm assuming the Traveler has some kind of technology that keeps it's own gravity from crushing everything around it, including Earth.

I think the gravitational field is being exerted on another dimension to channel is the light, but that's just speculation.