WASHINGTON — Liechtenstein became the latest country to sign the Artemis Accords Dec. 20, bringing the total number of signatories to more than half of a key United Nations body. Rainer Schnepfleitner, director of Liechtenstein’s Office for Communications, the government agency responsible for space issues, signed the Artemis Accords in an event at NASA Headquarters also attended by Georg Sparber, the country’s ambassador to the United States, and U.S. ambassador to Switzerland and Liechtenstein Scott Miller. “With its participation in the Artemis Accords, Liechtenstein looks forward to advancing space exploration…