- How can a torus or Klein bottle-shaped universe retain flat global curvature? http://map.gsfc.nasa.gov/universe/uni_shape.html 7 comments askscience
- How can the universe have a shape? This is mind-boggling to me... http://map.gsfc.nasa.gov/universe/uni_shape.html 16 comments askscience
- With great precision, we know that the universe is flat. What does this mean? http://map.gsfc.nasa.gov/universe/uni_shape.html 41 comments askscience
- To what extent should the human race pursue "perfection?" http://map.gsfc.nasa.gov/universe/uni_fate.html 48 comments philosophy
- Content of the Universe: Today vs. 13.7 billion years ago [PIE CHART] http://map.gsfc.nasa.gov/media/080998/index.html 66 comments science
- Content of the Universe (Pie Chart) http://map.gsfc.nasa.gov/m_ig/060916/universepie150.jpg 17 comments reddit.com
- Time Line of the Universe [picture] http://map.gsfc.nasa.gov/m_ig/060915/cmb_timeline150.jpg 29 comments reddit.com