Universe Mysteries (Suitable for 8-12 years old)

Author: (Australia) O'Keefe
Publisher:
Publish Date: 2007-01-01
Features: The universe is very, very big, and we can't even imagine how big it really is. If you take a plane from Earth to the Sun, it would take about 18 years. However, in the universe, this is only a very, very small distance. So, how do scientists measure such a vast universe? What are black holes in the universe? Why do the stars in the sky form constellations? The universe holds countless secrets, waiting for you to discover them.