Galileo Galilei's "The Phases of the Moon"
Image courtesy of Biblioteca Nazionale - Florence, Italy


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Our online store includes issues of NESTA's quarterly journal, The Earth Scientist, full of classroom activities on different topics in Earth and space science, as well as books on science education!

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Ammonite Pendant

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Understanding the Sky

People have been wondering about what they see in the sky for a long time. Because of our curiosity about the sky, we tell stories and myths about what we see there. The desire to explain what we see around...more

Phases of the Moon

The diagram shows the Moon in different positions along its orbit around the Earth. The Sun is off in the distance, lighting the Earth-Moon system. At any position, half of the Moon is illuminated by the...more

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Megalodon shark's teeth are available in our online store, along with other minerals and fossils, books, activities, jewelry, and household items.

Generous sponsorship of Windows to the Universe is provided by the Hewlett Foundation, the American Geological Institute, the American Geophysical Union, the National Science Foundation, NASA, NCAR, and the CISM and CMMAP projects. NASA CMMAP AGU CISM NCAR Hewlett AGI NSF