The story is about a special cylinder that serves as the standard for measuring mass. It's made of platinum-iridium and has been carefully preserved for decades. However, as writer Andrew Marantz explains, even things designed to stay the same can change. The story features special thanks to several individuals and a musical group. Radiolab has exciting news, including the naming of its first quasi-moon and a global naming contest for one of Earth's quasi-moons. The contest is in partnership with The International Astronomical Union, and listeners can vote on their favorite names. Radiolab also invites listeners to sign up for their newsletter, which includes essays, recommendations, and details on interacting with the show. The show is supported by listeners and members of The Lab, and leadership support is provided by several foundations. Radiolab can be followed on social media platforms, and listeners can share their thoughts by emailing the show. Foundational support for Radiolab was provided by the Alfred P. Sloan Foundation.