by APOD Robot » Sun May 24, 2020 4:06 am
Valles Marineris: The Grand Canyon of Mars
Explanation: The largest canyon in the
Solar System cuts a wide swath across the face of
Mars. Named
Valles Marineris, 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 in Arizona, USA is 800 kilometers long, 30 kilometers across, and 1.8 kilometers deep. The origin of the
Valles Marineris remains unknown, although a leading hypothesis holds that it started as a
crack billions of years ago as the planet cooled. Several geologic processes have been identified in
the canyon. The
featured mosaic was
created from over 100 images of
Mars taken by
Viking Orbiters in the 1970s.
[url=https://apod.nasa.gov/apod/ap200524.html] [img]https://apod.nasa.gov/apod/calendar/S_200524.jpg[/img] [size=150]Valles Marineris: The Grand Canyon of Mars[/size][/url]
[b] Explanation: [/b] The largest canyon in the [url=https://space.jpl.nasa.gov/]Solar System[/url] cuts a wide swath across the face of [url=https://solarsystem.nasa.gov/planets/mars/overview/]Mars[/url]. Named [url=http://www.youtube.com/watch?v=crsqzZNUXsY]Valles Marineris[/url], 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 [url=https://en.wikipedia.org/wiki/Grand_Canyon]Earth's Grand Canyon[/url] in Arizona, USA is 800 kilometers long, 30 kilometers across, and 1.8 kilometers deep. The origin of the [url=https://en.wikipedia.org/wiki/Valles_Marineris]Valles Marineris[/url] remains unknown, although a leading hypothesis holds that it started as a [url=https://apod.nasa.gov/apod/ap980310.html]crack[/url] billions of years ago as the planet cooled. Several geologic processes have been identified in [url=https://mars.nasa.gov/gallery/atlas/valles-marineris.html]the canyon[/url]. The [url=http://nssdc.gsfc.nasa.gov/photo_gallery/photogallery-mars.html]featured mosaic[/url] was [url=http://nssdc.gsfc.nasa.gov/photo_gallery/caption/marsglobe1.txt]created[/url] from over 100 images of [url=http://mars.jpl.nasa.gov/allaboutmars/facts/]Mars[/url] taken by [url=http://pds.jpl.nasa.gov/planets/welcome/viking.htm]Viking[/url] Orbiters in the 1970s.
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