Space-Time Adventures on PC: Physics Wonderland

Current observations have proven that two halves of the celestial sphere divided by the Milky Way are exactly the same in human vision, including the distances measured by the upper and lower hemispheres. The Hubble velocities of the galaxies away from us, given a similar distance, are also almost the same. From the current state of understanding, the universe is a round pie with a radius of 13.7 billion light years, and the Milky Way is located at the physical center of the observable universe....