In 2026, the Library of Congress created a miniature molecular data-storage device for America’s Time Capsule, planned for opening in 2276. The device contains synthetic DNA encoded with digitized collection items, including Thomas Jefferson’s Declaration of Independence draft, an 1898 audio recording, the 1791 L’Enfant Plan, the pre-1600 Codex Quetzalecatzin, Passamaquoddy recordings from 1890, and congressional proceedings from 1789–1824. The Library began its feasibility study after a 2024 congressional request and collaborated with the University of Washington’s Molecular Information Systems Lab. A metal vial approximately the length of a pencil eraser contains the DNA, while a separate chip provides decoding instructions.[1][2]
Synthetic DNA offers approximately 9 terabytes per cubic millimeter—roughly 1,000 to 100,000 times the capacity of conventional hard-drive, tape, or cloud storage—and can persist for thousands of years with minimal maintenance and no continuous power consumption.[1][2] For the Lunar Ark, this materially reduces storage volume, power dependence, and vulnerability to recurrent hardware migration. However, DNA is not a complete archival system: survival also requires durable encapsulation, error correction, decoding hardware, documented standards, and readable instructions that remain interpretable after technological discontinuity.
The Ark team should track the Library–University of Washington results, test synthetic-DNA storage under lunar vacuum, radiation, thermal cycling, and micrometeoroid-shielded conditions, and establish independent readback verification over decades. Integrate DNA as one layer of a heterogeneous archive alongside etched metal, ceramic, optical, and conventional electronic media; preserve multiple copies in separate lunar sites; and encode a compact self-describing recovery specification with file formats, checksums, language primers, and hardware-independent decoding procedures.