Wood Cell-Like Ultrastructures in Lunar Fragment B001 from Chang'e 5 Mission

– Red arrows: Vessel element-like tubular voids, reminiscent of longitudinal conduits in terrestrial xylem.
– Green arrows: Wood fiber-like elongated and parallel structures, possibly analogs to sclerenchyma fibers.
– Yellow arrows: Cross-sectional outlines of circular or polygonal voids, resembling transverse views of wood cells.
Credit: Beijing SHRIMP Center, Institute of Geology, CAGS; image processing by Fossil_Lin.

Interpretation and Comparison with Terrestrial Wood

The structures observed in the SEM image demonstrate key diagnostic traits of secondary xylem tissue:

– Tubular Channels (Vessel Elements): Prominent elongated, cylindrical structures (red arrows) resemble the vessel elements responsible for water transport in angiosperm wood. Their regular spacing and uniform diameter (~10–30 µm, estimated from SEM scale) are consistent with biological vascular design.
– Parallel Fibers (Wood Fibers): Green-arrowed features align with longitudinal orientation, exhibiting size and tapering patterns similar to tracheids or wood fibers.
– Circular/Polygonal Cells (Transverse Cell Walls): Yellow arrows highlight rounded structures suggestive of transverse sections through vessel elements or fibers.

Figure 2. Cross-sectional Pattern of Suspected Wood Cells

Above figure is described in detais at 

The SEM image of lunar sample B001 exhibits three tiers of structural complexity: longitudinal tubes, parallel fibers, and transverse cell outlines—all key features of xylem wood tissue. No known geological or mineralogical formation process on the Moon accounts for such regularity and hierarchy.

1. Lack of Geologic Analogs: Igneous crystallization cannot explain vascular-like tubes.
2. Size and Shape Consistency: Uniform diameters and repetition are hallmarks of templated biological systems.
3. Hierarchical Order: Suggests design or replication of terrestrial wood structure.
4. Impossibility of Lunar Flora: Strongly supports non-natural origin or prior biological templating.

Conclusion

The SEM and supporting images reveal wood cell-like structures in lunar sample B001. The combination of vessel-like tubes, fibers, and transverse outlines strongly points to artificial or bio-templated origin. This supports the hypothesis that the Moon may harbor remnants of engineered or fossilized biological structures.

References

- Beijing SHRIMP Center, Institute of Geology, CAGS. Electron Microscope Image of Basaltic Fragment B001. [Phys.org](https://phys.org/news/2021-10-change-samples-reveal-key-age.html)
– Annotated SEM image: [Flickr](https://www.flickr.com/photos/fossil_lin/54413342630/sizes/o/)
– Blog discussion: [Wretchfossil](https://wretchfossil.blogspot.com/search?q=wood+cells+on+the+moon)

- Science Advances article: https://www.science.org/doi/10.1126/sciadv.abl9174