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Neptune - Windows to the Universe

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Arches National Park Geology Tour provides an extensive, visually rich description of the geology of Arches, by Deborah Ragland, Ph.D. See our DVD collection.


Neptune, the eighth and furthest planet from the Sun, is a very cold place. Its bluish color is caused by small amounts of methane gas in its atmosphere. The planet has moons and a very narrow, faint ring system.

Visit another planet: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Dwarf Planets
Neptune's <a href="/php/tour_test_sqli.php?page=/neptune/lower_atmosphere.html&edu=elem">atmosphere</a> shows
a striped pattern of
<a href="/php/tour_test_sqli.php?page=/neptune/atmosphere/N_clouds_overview.html&edu=elem">clouds</a>.
This cloud pattern is very similar to that of
<a href="/php/tour_test_sqli.php?page=/jupiter/jupiter.html&edu=elem">Jupiter</a> and
<a href="/php/tour_test_sqli.php?page=/saturn/saturn.html&edu=elem">Saturn</a>.
Neptune even has a <a href="/php/tour_test_sqli.php?page=/neptune/atmosphere/N_clouds_GDS.html&edu=elem">Great Dark
Spot</a> similar
to Jupiter's <a href="/php/tour_test_sqli.php?page=/jupiter/atmosphere/J_clouds_GRS.html&edu=elem">Great
Red Spot</a>.
The Great Dark Spot of Neptune is thought to be a hole, similar to the hole
in the <a href="/php/tour_test_sqli.php?page=/earth/Atmosphere/ozone_layer.html&edu=elem">ozone layer on
in the <a href="/php/tour_test_sqli.php?page=/physical_science/chemistry/methane.html&edu=elem">methane</a> cloud
deck of Neptune.<p><small><em>Image courtesy of NASA</em></small></p>

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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