Use only the selected NASA source excerpts/images supplied with this task. Identify source ID, edition, physical PDF page, printed page where available, and table/figure/section for factual claims. Preserve conflicts and say when the supplied pack does not answer the question. Do not use this material as operational instructions.

Within this supplied two-edition pack, which edition explicitly supersedes the other, and what date is stated for the superseded edition? Cite the statement. Do not claim the later edition is current today.
