How Stuff Works - Read through articles that explain how things work. Includes sections for environmental science, earth science, life science, physical science, space and much more.
NASA STEM - Research science topics for grades K-12. Select your grade range, and then Homework Topics. Includes aeronautics, earth science, space science and more.
NASA Solar System Exploration - Find detailed information about the planets, asteroids, meteors, and meteorites, and space exploration missions.
Science News for Kids - Read through articles and information on all fields of science.