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Large amounts of plasma (consisting of mostly electrons and protons) ejected from the sun.
Gamma-Ray Bursts
Short bursts of gamma-rays (very high frequency electromagentic radiation) with very energetic explosions. These bursts can last from a few milliseconds to a few about an hour.
Geomagnetic Storms
A disturbance in the Earth's magnetosphere caused by changes in space weather such as solar erutptions.
The region around the sun that is filled with the Sun's gases, solar winds, and magentic fields.
The magnetic field produced by the Sun that is carried through by solar winds.
The uppermost part of the atmosphere. It also forms the inner surface of the magnetosphere and is reponsible for radio communication between distant places on Earth.
Lagrangian Point
Equilibrium points in space where the gravitational pull by a massive body is equal to that of another body.
Forms when a stream of charged particles, such as a solar wind, interacts with the magnetic field of a planet.
The surface of the sun that you see.
Solar Eruptions
These are sudden intense bursts of energy in the sun. They may develop in a few minutes and last for several hours.
Solar Wind
A constant stream pf charged particles, such as electrons and protons, that are continuously ejected from the upper atmosphere of the Sun.
Suprathermal Ions
Ions, charged particles, that have more energy than similar particles of the same type.

Can’t find the word here? Check out our full glossary

Archive 2008

Nov 7, 2008

A flurry of new-cycle sunspots in October 2008 may signal the beginning of the end of Solar Minimum.
Read the full story at: science@NASA

Feb 28, 2008

Three months ago, a new solar cycle began. This week, however, the Sun surprised onlookers with three big sunspots from the previous solar cycle. Strangely enough, this is perfectly normal. Find out what's happening on the Sun in today's story from Science@NASA.
Read the full story at: http://science.nasa.gov/headlines/y2008/28mar_oldcycle.htm?list1949

Feb 26, 2008

Cornerstone Evaluation Associates LLC (Cornerstone) has evaluated a couple of our education and public outreach programs: our short-term teacher professional development workshops and this website. A report summarizing findings from our teacher professional development workshops over Fiscal Year 2007 (FY07) - from October 1, 2006 through September 30, 2007 can be found here (PDF format - 59kB).
To learn more about our teacher professional development workshops, visit the THEMIS GEONS page and the Center for Science Education teacher PD workshop page

Feb 19, 2008

Leonardo / the International Society for the Arts, Sciences and Technology (Leonardo/ISAST) is organizing a digital media conference in Berkeley, CA which will take place on June 3, 2008 as part of the UC Berkeley Spring New Media Festival. Dr. Laura Peticolas, STEREO Education Scientist, will be on the panel, "Brilliant Noise: how data becomes experience for artists and for scientists". She will be talking about the efforts to sonify STEREO data.
As part of that conference, Leonardo would like to invite students to submit projects that blend the arts and the sciences.
For more information about the contest, including deadlines and how to submit a project, click here (opens in a new window)

Jan 11, 2008

NASA news reports: " Hang on to your cell phones, a new solar cycle is underway. Solar Cycle 24 began last week with the appearance of a magnetically "backward" high-latitude sunspot." Read the full story at the NASA science website

Jan 04, 2008

Happy New Year! STEREO may finally have its chance to observe a CME coming towards Earth. Spaceweather.com reports:
Solar physicists have been waiting for the appearance of a reversed-polarity sunspot to signal the start of the next solar cycle. The wait is over. A magnetically reversed, high-latitude sunspot emerged today. This marks the beginning of Solar Cycle 24 and the first step toward a new solar maximum. Intense solar activity won't begin right away. Solar cycles usually take a few years to build from solar minimum (where we are now) to Solar Max (expected in 2011 or 2012). It's a slow journey, but we're on our way!
Visit http://spaceweather.com for pictures of the new sunspot and updates.

Last updated 01/25/2010 © UC Regents