AgradecimientosCréditos de las fotos

Capítulo 13p.8 © CERN; p.42 © Stocktrek Images, Inc. / Alamy; p.46 © ESA/Hubble & NASA; p.48 © Bettmann/CORBIS

Capítulo 14p.1 © Sinibomb Images / Alamy; p.5 t © Dja65 – Shutterstock; p.5 b, r © http://www.ricardocom; p.7 © David Ball / Alamy; p.9 © Duomo/Corbis; p.14 t © Roy Pedersen – Fotolia.com, b © NASA; p.23 © REX/Stuart Forster; p.27 © Ljupco Smokovski – Fotolia.com; p.28 © Shelley Gazin/CORBIS; p.30 t © sciencephotos / Alamy, b © S McTeir for Hodder Education; p.31 © Atlantide Phototravel/Corbis; p.32 b © Alaska Stock / Alamy; p.33 © Ashley Cooper / Alamy; p.34 © shime – Fotolia.com; p.36 © NASA; p.39 © Antony Nettle / Alamy; p.44 t © CHRISTIAN HARTMANN/Reuters/Corbis, b, l © alexionas – Fotolia.com, b, r © Wim de Leeuw at CWI; p.46 © Whipple Museum of the History of Science; p.47 © lkordela – Fotolia.com; p.48 © Peter Tsai Photography / Alamy; p.49 © Ron Chapple Stock / Alamy; p.52 © REX/Sipa Press; p.53 t © Pavel Svoboda – Fotolia.com, b © patrickw – Fotolia.com

Capítulo 15p.3 © Image via History in Pictures (historyinpictures.com); p.19 © Viorel Sima – Fotolia.com; p.21 © castillo Bermudez – Fotolia.com; p.22 © macrovector – Fotolia.com; p.26 © BSIP SA / Alamy; p.28 © Edward H. Adelson; p.30 l © H. Raab via Wikimedia Commons (http://creativecommons.org/licenses/by-sa/3.0/deed.en), r © Monika Wisniewska – Fotolia.com; p.31 © G Brad Lewis / Getty Images; p.32 © waj – Fotolia.com; p.33 © ILYA GENKIN / Alamy; p.34 © Phil Degginger / Alamy; p. 36 t © BanksPhotos / Getty Images, b © ra3rn – Fotolia.com; p.40 © PAUL WOOTTON/SCIENCE PHOTO LIBRARY; p.43 © RTimages / Alamy; p.44 © Juice Images / Alamy; p.50 © RAGUET H / BSIP – Superstock; p.51 t © ZEPHYR/SCIENCE PHOTO LIBRARY, b © FALKENSTEINFOTO / Alamy; p.52 © MIXA / Getty Images; p.57 l © BSIP/UIG Via Getty Images, r © ultrasoundpaedia.com, b © akg-images / Universal Images Group / Universal History Archive; p.59 © National High Magnetic Field Laboratory

Capítulo 16p.2 l © Jan Tyler – Getty Images, r © ALEX CHERNEY, TERRASTRO.COM/SCIENCE PHOTO LIBRARY; p.3 © pixbox77 – Fotolia.com; p.5 t © NASA, b © NASA; p.6 t © Stocktrek Images, Inc. / Alamy, b, l © Matthew Spinelli, b, r © JOHN R. FOSTER/SCIENCE PHOTO LIBRARY; p.7 © NASA/Ames/SETI Institute/JPL-Caltech/SCIENCE PHOTO LIBRARY; p.8 © Digital Vision / Getty Images; p.9 © NASA/Space Telescope Science Institute; p.16 t © Cecilia Lim – Fotolia.com, c © Joe McNally / Getty Images, b © Stocktreck / Getty Images; p.23 © Harvard College Observatory; p.27 © laurent dambies – Fotolia.com; p.33 © WMAP Science Team / NASA; p.34 © epa european pressphoto agency b.v. / Alamy; p.42 © World History Archive / Alamy; p.43 © David A. Hardy/www.astroart.org; p.47 © eevl – Fotolia.com; p.50 © ESA and the Planck Collaboration

t = arriba, c = centro, b = abajo, l = izquierda, r = derecha

2 Agradecimientos

Las marcas comerciales de los equipos y programas informáticos mencionados en este libro están protegidas por sus respectivas marcas registradas y les expresamos nuestro reconocimiento.

Se ha hecho todo lo posible para localizar a todos los titulares de los derechos de autor, pero si alguno ha sido omitido inadvertidamente, los editores estarán encantados de realizar las oportunas correcciones en la primera ocasión.

Preguntas de examenLos editores desean agradecer a la International Baccalaureate Organization su autorización

para reproducir las preguntas de examen.