The Voyage exhibition opened on the National Mall in Washington, D.C., in October 2001. The one to 10-billion scale model Solar System stretches 2,000 feet (600 meters) between the National Air and Space Museum and the Smithsonian Castle. The exhibition went through the same approval process as any new installation on the National Mall, e.g., the World War II Memorial, with needed authorization by the U.S. Commission of Fine Arts and the National Capital Planning Commission. The Commissions required a seamless fusion of sculpture and science education, conveying an aesthetic beauty worthy of placement on the National Mall. A wide array of educational resources and programming has been developed, including: the Voyage exhibition, exhibition tours and tour brochures, grade K-13 lessons, family and home activities, educator workshops, grade K-20 classroom programs, and public and family events. The National Center for Earth and Space Science Education (NCESSE) launched the Exhibition Replication Phase in summer 2006 for communities across the nation and around the world. Community-wide Voyage programming has been succcessfuly conducted in communities across the nation through the Center's Journey through the Universe program. A team of scientists, engineers, and educators, from research organizations nationally, traveled to each community and delivered a week-long event—Journey through the Universe Week—including 100-200 classroom presentations to 3,000 to 10,000 grade K-20 students; educator training for 30 to 200 teachers; and public/family events for 200 to 2,000. All presentations were based on the Voyage theme, and the Voyage educational materials were used as the 'curriculum.' The Voyage grade K-13 education materials are comprehensive enough to be adopted by school districts as the space science curriculum, as was the case in 2000 for the sixth grade in the District of Columbia Public Schools. Over 1,000 educators a year are trained on the grade K-13 Voyage lessons through the MESSENGER Educator Fellowship Program and Journey through the Universe, both overseen by NCESSE.