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Oct. 10, 1984 - Hellas and Argyre: Hellas and Argyre are two immense basins found in the southern hemisphere of Mars. They were apparently caused by the impacts of asteroids about 4 billion years ago. Hellas has a diameter of approxiamtely 2, 000 kilometers(1, 200 miles) while Arygre has a diameter of 1, 200 kilometers(750 miles). This illustration shows how these two basins compate in size with the United States. Hellas would cover most of the Western States and Arygre would extend over a large portion of the Eastern section of the country
Picture No
13310070
Media ID
47103074
Size
5619px x 4473px
(2.0MB)
Credit
(c) Keystone Pictures USA/ZUMAPRESS.com/Mary Evans
Usage Restrictions
Editorial Use Only - No Property or Model Releases. For any non-editorial use, please contact Mary Evans direct
Source
Keystone Pictures USA
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Restrictions Only for United Kingdom
Apparently Asteroids Basins Billion Caused Diameter Extend Hellas Hemisphere Immense Impacts Kilometers Portion
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