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Collection:
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NASA Astronomy Picture of the Day Collection
Collection
NASA Astronomy Picture of the Day Collection
Collection
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Title:
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Valles Marineris: The Grand Canyon of Mars
Title
Valles Marineris: The Grand Canyon of Mars
Title
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Explanation:
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The largest canyon in the Solar System [ http://www.nineplan…] cuts a wide swath across the face of Mars [ http://www.nineplan…]. Named Valles Marineris [ http://astrogeology…], the grand valley extends over 3,000 kilometers long, spans as much as 600 kilometers across, and delves as much as 8 kilometers deep. By comparison, the Earth's Grand Canyon [ http://www.aqd.nps.…] in Arizona, USA is 800 kilometers long, 30 kilometers across, and 1.8 kilometers deep. The origin of the Valles Marineris [ http://mars.jpl.nas…] remains unknown, although a leading hypothesis holds that it started as a crack [ http://antwrp.gsfc.…] billions of years ago as the planet cooled [ http://helio.estec.…]. Recently [ http://antwrp.gsfc.…], several geologic processes have been identified in the canyon [ http://www.windows.…]. The above mosaic [ http://nssdc.gsfc.n…] was created [ http://nssdc.gsfc.n…] from over 100 images of Mars [ http://antwrp.gsfc.…] taken by Viking [ http://pds.jpl.nasa…] Orbiters in the 1970s.
Explanation
The largest canyon in the Solar System [ http://www.nineplan…] cuts a wide swath across the face of Mars [ http://www.nineplan…]. Named Valles Marineris [ http://astrogeology…], the grand valley extends over 3,000 kilometers long, spans as much as 600 kilometers across, and delves as much as 8 kilometers deep. By comparison, the Earth's Grand Canyon [ http://www.aqd.nps.…] in Arizona, USA is 800 kilometers long, 30 kilometers across, and 1.8 kilometers deep. The origin of the Valles Marineris [ http://mars.jpl.nas…] remains unknown, although a leading hypothesis holds that it started as a crack [ http://antwrp.gsfc.…] billions of years ago as the planet cooled [ http://helio.estec.…]. Recently [ http://antwrp.gsfc.…], several geologic processes have been identified in the canyon [ http://www.windows.…]. The above mosaic [ http://nssdc.gsfc.n…] was created [ http://nssdc.gsfc.n…] from over 100 images of Mars [ http://antwrp.gsfc.…] taken by Viking [ http://pds.jpl.nasa…] Orbiters in the 1970s. Explanation
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Credit and Copyright:
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Credit_and_Copyright
Credit and Copyright
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keyword:
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Mars
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keyword:
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Viking
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keyword:
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Valles Marineris
keyword
Valles Marineris
keyword
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facet_where:
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Mars
facet_where
Mars
facet_where
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facet_where:
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Arizona
facet_where
Arizona
facet_where
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facet_where:
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Goddard Space Flight Center (GSFC)
facet_where
Goddard Space Flight Center (GSFC)
facet_where
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facet_where:
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Jet Propulsion Laboratory (JPL)
facet_where
Jet Propulsion Laboratory (JPL)
facet_where
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facet_what:
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Earth
facet_what
Earth
facet_what
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facet_what:
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Mars
facet_what
Mars
facet_what
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facet_what:
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Viking
facet_what
Viking
facet_what
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facet_what:
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Altimeter
facet_what
Altimeter
facet_what
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facet_what:
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Mars Global Surveyor Orbiter (MGS)
facet_what
Mars Global Surveyor Orbiter (MGS)
facet_what
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original url:
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original_url
original url
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UID:
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SPD-APOD-ap020827
UID
SPD-APOD-ap020827
UID
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