Hughes, Catherine D. creator Aguilar, David A. ill Washington, D.C National Geographic 2012 eng 127 p. col. ill. 26 cm by Catherine D. Hughes ; illustrated by David A. Aguilar Includes index Astronomy Juvenile literature QB46 .H84 2012 520 9781426310140 (hardcover : alk. paper) 000001/00000133.jpg 000001/00000133.jpg DLC 116216