Top left: view from the Sun of the 3D L20 dust map (white) and molecular cloud spines identified in the 3D dust from Z21. Here, Orion A, B, and λ are green, cyan, and pink, respectively. Notable stars within our 3D area of interest (teal) and the expansion center of OBP-B1 (orange) are also shown. The large orange arrow indicates the direction of the Sun. Top right: view from the Sun featuring all of the elements of the top-left panel as well as OBP-B1 (blue vectors) and gas tracers identified in G21 (purple vectors). Bottom left: top-down view (view from the Galactic plane) of all previous elements: the L20 dust map; Orion A, B, and λ; notable stars; OBP-B1; gas tracers; and the OBP-B1 expansion center with a line indicating the line of sight from the Sun. Bottom right: view from the Galactic plane of all previous elements as well as our models of the OBP-B1 Sphere (purple) and the Orion Shell (gray). An interactive version of the figure can be found here. Subsequent 3D visualizations in this paper are different rotations or combinations of elements in this figure.

An interactive version of this figure is available in the online journal.