View Full Version : Odyssey Reveals More of Frosty Mars

2005-Dec-07, 06:11 AM
SUMMARY: It turns out that Mars has been hiding its water underneath a layer of dry ice. By tracking the seasonal changes at Mars northern ice cap, NASA's Mars Odyssey spacecraft has watched how a layer of carbon dioxide permafrost comes and goes. When the permafrost dissipates in the Spring, Mars reveals a soil layer mixed with large amounts of water ice. In some places, the water ice content is more than 90% by volume. During the winter, the dry ice permafrost can reach more than a metre in thickness.

View full article (http://www.universetoday.com/am/publish/odyssey_reveals_frosty_mars.html)
What do you think about this story? post your comments below.