5Marvel in the magnificence of our solar system... distant galaxies and supernovas, nebulas and comets, are all made visible through the watchful eye of NASA astronomers and the Hubble Space Telescope. Well-known Astronomy author and educator, Phil Harrington, also shares detailed notes about historical events and astronomical happenings throughout the year. Printed with soy-based inks on FSC certified paper, this 12 x 12 wall calendar features large monthly grids that offer ample room for jotting notes, along with six bonus months of July through December of 2021. Also includes moon phases (CST), standard U.S. and international holidays.