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Science, Evolution, and Creationism, by the National Academies, focuses on teaching evolution in today's classrooms. Check out the other publications in our online store.
An artist's conception of NASA's Solar Dynamics Observatory (SDO) in orbit around Earth.
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Image courtesy of NASA/Goddard Space Flight Center Conceptual Image Lab.

Solar Dynamics Observatory

NASA's Solar Dynamics Observatory (SDO) is a satellite which carries several telescopes and other instruments for observing the Sun. The instruments on SDO produce much more detailed images than similar instruments on earlier orbiting solar observatories. SDO, which was launched on February 11, 2010, will study the Sun for 5 years as part of NASA's Living With a Star program.

SDO carries three instruments: HMI, EVE, and AIA. The Helioseismic and Magnetic Imager (HMI) studies the interior of the Sun and the Sun's magnetic field. The Extreme Ultraviolet Variability Experiment (EVE) monitors variation in the Sun's overall ultraviolet radiation output. UV rays from the Sun have a strong impact on Earth's upper atmosphere. The Atmospheric Imaging Assembly (AIA) captures extremely high-resolution images of the Sun at various UV wavelengths.

SDO captures images of the Sun much more frequently than earlier orbiting observatories did. It also takes pictures with much higher resolution. These improvements combine to give scientists a much better picture of the Sun.

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Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part is sponsored in part through grants from federal agencies (NASA and NOAA), and partnerships with affiliated organizations, including the American Geophysical Union, the Howard Hughes Medical Institute, the Earth System Information Partnership, the American Meteorological Society, the National Center for Science Education, and TERC. The American Geophysical Union and the American Geosciences Institute are Windows to the Universe Founding Partners. NESTA welcomes new Institutional Affiliates in support of our ongoing programs, as well as collaborations on new projects. Contact NESTA for more information. NASA ESIP NCSE HHMI AGU AGI AMS NOAA