The Year in Space 2018 Wall Calendar, Large Format 16" x 22" When Open, Over 120 Astronomy & Space Exploration Images, Moon Phases, Space History, Sky Events Over 120 space images - more than any other space wall calendar Large-format 11" x 16" (16" x 22" when open) - 22% larger than typical calendar Hundreds of sky events, space history dates, daily moon phases A different space or astronomy topic explored in depth each month Designed to be engaging for adults, students, and children over 8 years