Research group offers this extensive paper examining the effects of the sun's 11-year sunspot cycle and its solar wind on the Earth's climate.
Get answers to nearly 100 questions about the Sun, such as "Is the Sun shrinking?" and "Why can't we see the corona?"
Rather metaphorical explanation of the Sun and its life span includes an exploration of how it has influenced religion and culture over time.
Astronomy magazine details the scientific discoveries that led to the answer to this age-old question.
BAA members share observations of solar activity, sunspots, and magnetic disturbances. Browse the picture gallery and the newsletter archive.
Amateur Dutch astronomer graphs sunspot positions over time to illustrate a butterfly formation.
Educational resource has a basic intro to the solar system's center. Read articles about the Sun, get student activities, or submit a question.
NASA research center educational site offers information about the Sun, sunspots, flares, the corona, and solar wind.
Plymouth State College provides this general overview of the Sun. Find out why the star creates seasons and why solar heating varies.
Read about how heat convection causes turbulence on the surface of the Sun and how scientists can simulate that turbulence.
Examine the explanations for the phenomena seen at sunrise and sunset when some part of the sun changes color. Find pictures and advice on how to see the event yourself.
Australian space weather service provides info about solar radiation, the corona, solar activity and flares, and how the Sun affects the Earth.
Reports findings of "jet streams" or "rivers" of charges plasmas flowing within the Sun. Includes color diagrams and animations.
Learn about magnetic fields and magnetic field lines, how the Sun's magnetic field works, and why there are magnetic loops in the Sun's corona.
Read how the Sun both helps and hurts humankind and affects culture, history, and science. With a teachers' guide, lesson plans, and activities.
Find out how scientists study the Sun's different layers by viewing it through various filters. Includes filtered images.
Astronomers cataloged an eruption of material from the sun in April 1997 that struck the Earth. Read about the event, or see the video.
Lesson plan outlines an experiment that can help students determine if the Earth's path around the Sun is circular or elliptical.
Describes the two extremes of the sun's ecliptic, generally marked on June 21 and December 21.
Describes this familiar star's age, origins and composition. Chronicles the history of scientific inquiry into solar subjects.
Find a picture and description of the phenomenon where the top edge of the sun momentarily turns green. Includes advice on how to best observe the Green Flash.
Enlightening intro describes the sun's interior, its composition and magnetic field, solar wind and radiation, and solar events.
Lecture given at the Perkins Observatory in Ohio in 1997 outlines the entire life of the Sun, from its birth to its explosive death.
Space Environment Center details the Sun and how its sunspots, solar flares, and coronal holes affect Earth.
Professor describes how the Earth's revolution, magnetic and electric fields, and near environment is affected by the Sun.
Intro to the closest star examines the composition of the Sun, eclipses, flares, and the northern lights.
Ambitious project by NASA and ESA will give solar physicists their first long term, uninterrupted view of the Sun. Find images, data and news.
Located at NASA's Goddard Space Flight Center, this research facility offers solar news, videos of solar events, and links to other resources.
Index of sites that provide images of the sun, including real-time and downloadable pictures, from the Space Environment Center.
DX Listeners club, devoted to searching for signals from outer space on the radio, provides data about solar cycles, flares, and coronal holes.
Describes scientists' attempts to use two triangulated telescopes to get a three-dimensional view of the Sun's coronal loops. See the images.
Investigate SPARTAN 201, NASA's mission to explore the sun's corona. Learn about the spacecraft, its instruments and the completed missions.
Offers an intro to the sun, news about solar events, sun-related activities, and images. Submit a question to staff, or see lecture videos.
Young astronomer's learning guide explains what the Sun is and how it works. See a video, or hear a sound file of a song about the Sun.
Find out how astronomers use the Japanese American Solar Magnetograph Instrument to study the Sun's magnetic field.
Get the times for the Sun's rise and set, the Moon's rise and set, the moon's phase, transits, and twilight, by specifying a date and location.
See NASA images of the sun taken from the Earth and from space, read about solar research, or get updates about solar weather.
Peruse synopses and animated images of solar rotations, the sun's magnetic fields, and post-solar flare loops from this NASA scientist.
Teachers can preview lesson plans about centripetal force, gravity, center of mass, and the electromagnetic spectrum as they relate to the Sun.
Read about this NASA space physics research department's Sun-Earth connections flight programs and educational outreach projects.
Article by Andrew T. Young of San Diego State University's Astronomy department examines the reasons for green flashes and provides pictures.
Introduction to our nearest star describes its attributes and discusses current scientific knowledge and unresolved issues.
Professor Mike Dworetsky in the Department of Physics and Astronomy at University College London explains the phenomenon known as the "Green Flash."
University's astronomy department offers this tutorial about the Sun, its composition, and solar events. Check out photos, diagrams, and charts.
Read about the Sun's composition, size, and temperature, the corona, the chromosphere, and fusion from this Univ. of Oregon physics professor.
University of Amsterdam graduate student offers this extensive lesson on what the Sun is, how it works, and how it affects the Earth.
Examine images taken by the Yohkoh satellite's X-ray telescope, get facts about the sun, and find learning activities for kids.