Maps International Glow in the Dark Constellation Map &ndash; Illuminates After Dark &ndash; 33 x 23 GLOW IN THE DARK: Constellations charge by absorbing light during the day, then glow clear and bright at night time. EXTRA LARGE WALL MAP: Poster measures 33 (w) x 23 (h) inches - the huge map is ideal for walls or ceilings and has educational instructions for use underneath. NIGHT TIME REASSURANCE: A great gift for children who may be afraid of the dark, the glow in the dark constellation star map provides gentle illumination. CREASE-FREE DELIVERY: Your glow in the dark constellation poster is rolled in a tube for delivery, so it arrives ready to display. MAPS INTERNATIONAL: Our philosophy of 'cartographic excellence' combines detail, design and high quality finishes in a range of stunning wall maps.