The Artemis program’s first crewed trip to the moon may be slightly delayed, but the crew is still deep in prep mode. In the 1970s, the Apollo missions instituted a mandatory quarantine for those traveling to the moon. According to a statement released by NASA, the Artemis II crew is already in quarantine at a facility in Houston. Protecting the Moon From Cross ContaminationBefore the first lunar landing, scientists were not certain the lunar surface was sterile. The agency maintained this post-lunar quarantine protocol until Apollo 14, when it had gathered enough evidence to rule out biohazards from the Moon.