Explore worlds within worlds on these four amazing journeys. Using your viewfinder, zoom in from the extremely large to the incredibly tiny in eight or nine giant steps.

IMAGINE you can look down on the entire Universe. Through your viewfinder you can see billions of galaxies, all clustered together. Now – zoom in. What can you see now?
Individual galaxies, some beautiful spirals, others just oval-shaped blobs... Zoom in some more. Masses of stars and huge clouds of shimmering colour come into view. One of those stars, a minute, insignificant pinprick of light in your viewfinder, is, in fact, our own Sun. If you zoom some more, you will start to make out the planets of the Solar System, one of which is our very own Earth.
Look for the viewfinder on each illustration. Then turn the page to see what you’ve zoomed in on next. It's like a journey that begins with the unbelievably massive and ends with the incredibly tiny. On the way, you visit the galaxies into which all matter in the Universe is clustered,
the stars that make up those galaxies, the family of planets that surrounds very particular star, Earth itself, the rocks that make up our planet, and the atoms that make up those rocks.

Nicholas Harris:

Has a Hons degree in Geography, University of Sheffield, England. Began career in publishing 1978. Worked for a number of adult non-fiction and children’s publishers before setting up own company, Orpheus Books Ltd in 1992. Has written many non-fiction works for children, specializing in science, astronomy, prehistory, zoology, geography and ancient history. He is British.