- A NASA Film Library-Award winning educational videos of Earth Environmental Studies & NASA's Space Missions. Over 35 years of U.S. Space Exploration History. - Actual footage of NASA Projects:Earth (Our Blue Planet), Mercury, Gemini, Apollo, Eagle-Moon Landing, Lunar Rover, Skylab, Apollo-Soyuz, Space Shuttles, Challenger Disaster, Moon, Sun, Solar System, Galaxies, Universe, Satellites, Mars-Viking Lander, Jupiter-Pioneer, Venus/Mercury-Mariner, Saturn, and more. Excellent research source for students.
- ARC Science Simulations Web Site - Earth from space images and prints from ARC's 1-km cloudless Face of the Earth image, and Dance of the Planets planetarium.
- The Artemis Project -- Commercial Moonbase - The Artemis Project is a privately financed lunar development organisation. It will reduce the environmental impact of space flight with Lunar Resources..
- Astronomy Picture of the Day - A new picture of our beautiful universe every day.
- The Planetary Society was founded in 1980 by Drs. Carl Sagan, Bruce Murray and Louis Friedman to encourage the exploration of our solar system and the search for extraterrestrial life. 100,000 members from over 100 countries--the largest non-govt space organization on Earth.
- University of California, Santa Barbara - Astrophysics Project includes Astro Research, the Remote Access Astronomy Project (RAAP) and the Interactive Astrophysics pages at UCSB.
- Vaisala K.K. - Sensors and solutions for environmental measurements - Vaisala K.K. is a subsidiary of VAISALA OY, Helsinki, Finland which products are used in over 100 countires