The huge shell offers another perspective of just how far our solar system extends. Diagram of key parts of our solar system (via Wikimedia Commons) This final image gives you an idea of how close ...

our visions of the cosmos often took the shape of diagrams—representing what we believed about our solar system. What’s remarkable about Claudius Ptolemy’s vision of the universe is that it ...

What the project really gets at is just how important scale is. In order to make a diagram of our solar system easy to read, one with to-scale orbits has inflated planet size. Only with a model ...

Our moon is not the biggest moon in the solar system — not by a long shot ... happen if the Moon and Ganymede swapped places. This diagram appeared in our December 2016 issue.