The difference between dk Universe Encyclopedia and dk Space is that dk Universe Encyclopedia is suitable for adults and teenagers to read, while dk Space is suitable for children to read. Dk Encyclopedia of the Universe is a popular science masterpiece published by Doreen Kindsley Publishing House in Britain. Edited by Lord martin rees, a famous cosmologist and astrophysicist, he introduced the universe comprehensively, systematically and popularly. It's a collection of astronomy enthusiasts. Dk Space is a British Dk company, which selects exquisite space pictures from authoritative space research institutions such as NASA, ESA and JAXA. And describe the space with pictures and texts, which is more suitable for children.