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Hands On Mineral Identification helps you to identify over 14,500 minerals! By M. Darby Dyar, Ph.D. See our DVD collection.

Intermediate Ulysses Word Search

When you find a word, click on the first (or last) letter and hold down the mouse button. Drag the cursor to the last (or first) letter and release.

Words can be horizontal or diagonal, forwards or backwards. They can even cross! So have fun and good hunting! Try our Beginner or Advanced levels for variety...

Tell me more about these words that have to do with the Ulysses space mission: Ulysses, SWOOPS, flare, GRB, Jupiter, gas, corona, wind, cycle, ejection, plasma, sunspot

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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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Traveling Nitrogen Classroom Activity Kit

Check out our online store - minerals, fossils, books, activities, jewelry, and household items!...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

Sunspots

Sunspots are dark, planet-sized regions that appear on the "surface" of the Sun. Sunspots are "dark" because they are colder than the areas around them. A large sunspot might have a temperature of about...more

Creating Elements up to Iron

When the temperature in the core of a star reaches 100 million degrees Kelvin fusion of Helium into Carbon occurs. Oxygen is also formed from fusion of Carbon and Helium together when the temperature is...more

Binding Energy

A plot of the binding energy per nucleon vs. atomic mass shows a peak atomic number 56 (Iron). Elements with atomic mass less then 56 release energy if formed as a result of a fusion reaction. Above this...more

Fusion Experiments

There are several experiments where nuclear fusion reactions have been achieved in a controlled manner (that means no bombs are involved!!). The two main approaches that are being explored are magnetic...more

The Hydrogen Bomb

In the Hydrogen bomb the explosion of a nuclear fission charge (atomic bomb) produces the temperature and density so fusion can occur. This fusion results in a sudden release of a large amount of energy...more

The Big Bang

All of the matter and energy in the Universe was initially confined in a very small region. An explosion occurred which caused the Universe to begin expanding. This expansion continues today. ...more

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