AboutPhilip Stahl Expertise I have forty years of experience in Astronomy, specifically solar and space physics. My specialties include the physics of solar flares, sunspots, including their effects on Earth and statistics as applied to astronomical investigations.
Experience Astronomy: more than forty years experience starting with construction of my own simple telescopes. Worked at university observatory in college, doing astrographic measurements. M.Phil. degree in Physics/Solar Physics and more than ten years as researcher.
Question Where is cosmology now on the overall shape of the universe? Is it a big sphere, with the galaxies all moving away from each other? Then what is in the center, a big space? What about the old question, if one headed out from earth in a spaceship on a straight line trajectory, with the earth always in the center of the rear view mirror, where would you go? Would you wind up eventually heading back to earth? Is the universe analogous in three dimensions to the two dimensional surface of a sphere, finite yet unbounded?
Answer Hello,
Rather than trying to deal with this textually, I think you will find most of your answeres addressed in this short video on the shape of the universe. If you still have questions after watching it, let me know.
