I observe light originating from a planet which has a much stronger gravitation field than our own earth. The wavelength of the light is recognized as having been emitted from hydrogen-1 atoms, but is red-shifted due to the higher gravitation of that planet. I have a container of some kind with which I can store the light. Container A contains red-shifted light from the alien planet. Container B contains light emitted by hydrogen-1 here on earth, and is not red-shifted from our perspective. I take the two containers, some hydrogen-1, and a spectrometer, and I travel to the other planet. After I arrive at the other planet, it seems to me that… A: When I measure the wavelength of the light from the containers, my results for each will be exactly the same as they were on earth ( I may be in a denser gravitational field, but me and my containers and measuring devices, all share the same space-time). Is this true or false? B: The light from container A as measured by the inhabitants of the other planet will not appear red-shifted (or blue-shifted), because on returning to their planet it was blue-shifted the exact right amount to return it to normal from their perspective. Is this true or false? C: The light from container B as measured by the inhabitants of the other planet will appear blue-shifted, as it has arrived from a source of less gravitation. Is this true or false? I think there must be a flaw in my thinking somewhere, because if A, B, and C are all true, wouldn’t the electrons in my hydrogen-1 atoms orbit their atoms at a faster rate than the electrons in the hydrogen-1 atom from he alien planet? It doesn’t seem possible. I thought that if I enter the same space-time reference frame as the alien planet, our atoms should behave exactly the same.