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The Spring 2011 issue of The Earth Scientist is focused on modernizing seismology education. Thanks to IRIS, you can download this issue for free as a pdf. Print copies are available in our online store.
Ancient societies would act wild in order to free the Sun from the animal.
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Solar Eclipses Were not Always Enjoyed

Solar eclipses are really great to watch! But in the past, people were very scared of them. They didn't understand what was going on. Some people thought that a monster or animal was eating the Sun! They would dance around and yell to try and scare the animal away.

Others thought that an eclipse brought diseases. Many people died from the flu, which they blamed on the eclipse. Some also thought that the Moon was an evil brother, chasing his sister across the sky.

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Cool It! is the new card game from the Union of Concerned Scientists that teaches kids about the choices we have when it comes to climate change—and how policy and technology decisions made today will matter. Cool It! is available in our online store.

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Cool It! Game

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Last Solar Eclipse of the Millennium on August 11

The last solar eclipse of this millennium was on August 11, 1999. Only people in Europe, the Middle East and India could see it. This was a total solar eclipse, which means that the Moon completely blocked...more

Solar Eclipses

An eclipse of the Sun occurs when the Earth passes through the moon's shadow. A total eclipse of the Sun takes place when the Moon is directly between the Sun and the Earth. When a total eclipse does...more

The Solar Corona

Rising above the Sun's chromosphere , the temperature jumps sharply from a few tens of thousands of kelvins to as much as a few million kelvins in the Sun's outer atmosphere, the solar corona. Understanding...more

Solar Eclipses Were not Always Enjoyed

Solar eclipses are really great to watch! But in the past, people were very scared of them. They didn't understand what was going on. Some people thought that a monster or animal was eating the Sun! They...more

The Photosphere - the "Surface" of the Sun

Most of the energy we receive from the Sun is the visible (white) light emitted from the photosphere. The photosphere is one of the coolest regions of the Sun (6000 K), so only a small fraction (0.1%)...more

Helmet Streamers and the Magnetic Structure of the Corona

The gas in the solar corona is at very high temperatures (typically 1-2 million kelvins in most regions) so it is almost completely in a plasma state (made up of charged particles, mostly protons and electrons)....more

Sunspots

Sunspots are dark spots on the Sun. They may look small, but they are actually as big as a planet like Earth or Mars! Sunspots are "dark" because they are colder than the areas around them. Of course,...more

Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part by the National Science Foundation and NASA, our Founding Partners (the American Geophysical Union and American Geosciences Institute) as well as through Institutional, Contributing, and Affiliate Partners, individual memberships and generous donors. Thank you for your support! NASA AGU AGI NSF