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Young Voices for the Planet DVD in our online store includes 8 films where students speak out and take action on climate change.
This image shows an artist's rendition of the HESSI spacecraft with the Earth in the background. The lower left image shows a picture of the Sun taken by the Yohkoh satellite. The lower right image or inset shows an enlargement of a solar flare taken in the x-ray segment of light.
Click on image for full size
Courtesy of NASA

HESSI is Off!
News story originally written on February 6, 2002

HESSI had a hard time getting off the ground! First the spacecraft was damaged in ground vibration testing and had to be fixed. Then there were problems with HESSI's launch vehicle. But HESSI was launched successfully on February 5, aboard a Pegasus XL rocket. Early signs show that everything is going fine with the mission. Scientists are looking forward to the information HESSI will tell us about how the Sun affects the Earth.

HESSI (the High Energy Solar Spectroscopic Imager) is NASA's newest mission built to study the Sun. Specifically, HESSI will study solar flares. Solar activity like flares can have a huge effect on Earth. Particles released during a solar flare can reach Earth causing strong geomagnetic storms, auroras and electrical power blackouts. So, it's important for us to understand solar flares. HESSI will help us do just that!

The total cost of the HESSI mission is $85 million.

Last modified February 6, 2002 by Jennifer Bergman.

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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