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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.
This is an image of Mars.
Click on image for full size
Image from: NASA

Theories about Martian water & Climate

Scientists have two ideas about what happens to water on Mars. These ideas conflict with each other.
  • 1.) Warm weather caused river channels & floods, which released water into the atmosphere. Rain returns water to the same ground. The result is that *water is recycled*.
  • 2.) Floods caused water to flow (over time) from the higher ground to low ground. It was not released again, even when the weather became warm, but remained *permanently* frozen into the ground .
How can we tell which of these ideas is correct? Further exploration of Mars would help find the answers.

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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