The former is true. The universe isn't expanding from a point, but rather it's expanding uniformly, and every observer sees every other observer as receding. As a result there is no "center of the universe". See this page. I quote: "In 1929 Edwin Hubble announced that he had measured the speed of galaxies at different distances from us, and had discovered that the farther they were, the faster they were receding. This might suggest that we are at the centre of the expanding universe, but in fact if the universe is expanding uniformly according to Hubble's law, then it will appear to do so from any vantage point" (emphasis mine). For more details, see the rest of the discussion on the page.
Mod Moved Comments To Chat