Wood, as we commonly understand it on Earth, is primarily composed of cellulose fibers and is derived from the structural tissues of trees. To the best of our knowledge, no other planet in the universe has been discovered to possess identical forms of wood. However, it is important to note that the universe is vast and largely unexplored, and our understanding of the diversity of materials and ecosystems on other planets is limited.
Wood as we know it on Earth is a result of the specific combination of factors, such as the presence of trees, a suitable atmosphere, and the availability of water and nutrients. These factors interact in a complex way to enable the growth of trees and the production of wood. While some exoplanets may have conditions conducive to supporting plant life, including the potential for tree-like structures, it is uncertain whether these hypothetical organisms would produce a material analogous to Earth's wood.
In summary, based on our current knowledge, wood as we know it on Earth is rare in the universe. However, as our understanding of exoplanets and extraterrestrial environments advances, we may discover unique materials and ecosystems that challenge our current perceptions.