- Ask the Space Scientist About the Sun
 - Series of questions and answers addressing the nature of the sun. - Astronomy in Motion Sun Pages
- Includes a brief story of the Sun as a star, plus solar activities designed for understanding the size and effects of the Sun on the Earth.
- Best of Free Spirit Presents: The Sun
- Offers basic physical facts in addition to different cultural myths.
- British Astronomical Association Solar Section
- Designed to enable members to exchange news and observations of the Sun.
- FactShack.com: The Sun
- Information on the history, composition, evolution, corona, solar wind, and magnetic field of the Sun.
- Genesis Mission (2)
- High Energy Solar Spectroscopic Imager (HESSI) (2)
- International Heliophysical Year (IHY) 2007
- Working to advance our understanding of the heliophysical processes which govern the Sun's influence on Earth.
- International Solar-Terrestrial Physics (ISTP)@
- Learn about International Solar-Terrestrial Physics (ISTP), the initiative of an international research collaboration between NASA, the European Space Agency (ESA), and the Institute of Space and Astronautical Science (ISAS) to study various phenomena related to the Sun, solar wind, and its effects on the Earth.
- Lockheed Martin Solar and Astrophysics Laboratory
- Scientists and engineers who design, build, operate, and use solar and astrophysical observing instruments.
- Mission to Geospace: Probing the Sun-Earth Connection
- Describes how we are living in the atmosphere of the sun. Also provides information on the Earth's magnetosphere, its space environments, and space weather.
- NASA Sun-Earth Connection (SEC)
- Understanding the changing Sun and its effects on the Solar System, life, and society.
- NASA's Solar Terrestrial Probes (STP) Program
- STP Program constitutes an ambitious in-depth look at space weather and solar science with implications for improving life on Earth, space exploration and vastly increasing our understanding of star system processes.
- Once and Future Sun
- Traces and projects the life of our sun.
- Scientific American: The GONG Show
- Astronomers learn ringing truths about the sun.
- Solar Data Analysis Center (SDAC) - NASA Goddard Space Flight Center
- Solar Flare Theory
- Introduction to solar flares and solar flare research. A crossword puzzle and answers to readers' questions are included.
- Solar Observing by Peter Meadows
- Includes observing advice, a glossary, drawings and animations recording sunspot activity, and other resources.
- Solar Oscillations Investigation (SOI)
- International project studying the interior structure and dynamics of the Sun using the Michelson Doppler Imager (MDI) instrument.
- Solar Physics Branch - Marshall Space Flight Center
- Images, animations, and information on solar astronomy missions and science.
- SolarMax
- Official site of the IMAX documentary. Tells the story of humankind's struggle to understand the sun.
- Spartan 201 (1)
- Stanford SOLAR Center
- Pictures, activities, research, myths, and other information about the Sun.
- Sun - Windows to the Universe
- Describes the solar activity of the closest star to Earth, the Sun.
- Sun Block '99
- Young scientists across the United Kingdom investigate the sun.
- Sun-climate Question: Is There a Real Connection?
- Examines whether or not variations in the sun's radiative and plasma emissions occur that are capable of influencing the weather and climate at the earth's surface.
- Sun-Earth Connection Education Forum (SECEF)
- Shares the exciting discoveries and knowledge from NASA Sun-Earth Connection missions and research programs with educators, students, and the general public.
- Sun-Earth Day (5)
- Learn about the annual space science event, held near the spring equinox, which teaches the public about the Sun-Earth connection. Find educational and interactive sites from NASA's Sun-Earth Connection Education Forum for present and past Sun-Earth Day celebrations.
- SunAngle
- Calculates solar angles and related information for a given location, date, and time.
- SunPosition
- Shareware program calculates an array of solar angle data that can be copied into spreadsheets and other documents.
- Surfing for Sunbeams
- A hypermedia tour of our sun and how scientists are studying it.
- The Sun - A Multimedia Tour
- Describes our nearest star.
- The Sun - Nine Planets
- Includes facts, links, and pictures of the largest star in our galaxy, the Sun.
- The Sun - Views of the Solar System
- Features statistics, information, images, and video of the sun.
- The Sun: Man's Friend & Foe
- Educational site on the sun and its positive and negative effects.
- Transition Region and Coronal Explorer
- Solar images and data from the TRACE instrument exploring the magnetic field in the solar atmosphere.
- Ulysses Mission@
- Virtual Tour of the Sun
- Information about the Sun, Earth's nearest star. The Virtual Tour of the Sun includes videos.
- Wikipedia: Sun
- Article about the Sun, including the history of solar observation, its structure, life cycle, and other aspects.
- Yohkoh Public Outreach Project
- Yohkoh satellite is an observatory for studying X-rays and gamma-rays from the Sun. Site features data including movies and a wealth of information about the Sun.
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