The National Institute of Standards and Technology (NIST) is constructing a stainless‑steel time capsule that will be buried in Philadelphia on July 4, 2026 and kept underground for 250 years. The capsule, about two feet wide and three feet tall, weighs roughly 400 kg and contains stacks of shelves inside a bell‑jar that prevents water from entering. Items collected from all 50 states and territories include a crystal from the New Year’s Eve ball drop, a signed congressional letter, a cellphone, an NFL coin‑toss coin, and a message in a bottle. NIST engineers are also working on other preservation projects, such as encasing a copy of the Declaration of Independence for Westchester County and studying document degradation in an anoxic chamber.
Made by AI. If you spot anything of concern write us at contact@cybach.com. We’ll promptly correct irregularities.