Researchers Investigate Early Solar System

A 3-D tomographic reconstruction of a ~90-nm wide polyhedral serpentine grain from the Mighei CM carbonaceous chondrite meteorite. The surface of the tomogram is made semitransparent to visualize the interior. At the core is an elongated structure that extends the length of the grain. When viewed in axial orientation this structure is hollow from one end to the other, indicating that it is tubular. The tomogram was reconstructed from 120 bright-field images acquired over a tilt range of +/- 60 degrees.