Covers all major areas of science, engineering, technology, as well as mathematics and the medical and health sciences, while providing a comprehensive overview of current scientific knowledge and technology. Entries typically describe scientific concepts, provide overviews of scientific areas and, in some cases, define terms.
Vibrant images and a simple introduction about galaxies and the universe lead the reader into a tour of our Sun and all 8 planets and the dwarf planets in our solar system and what lies beyond the eighth planet, Neptune.
Encyclopedia (Scholarly Community): A user-generated content collection platform for researchers with additional contributions published on scientific websites by competent experts.
NASA
NASA e-Books: Read and download free NASA e-Books on the agency’s history, aeronautics research, science missions, and the International Space Station.