NASA Mars probes discover billion-year-old dune fields frozen in time

The HiRise camera on the Mars Reconnaissance Orbiter snapped these dune fields in Valles Marineris. They’re estimated to be a billion years old


NASA/JPL/University of Arizona

Mars has a roughly 4.5-billion-year history. Thanks to our robotic explorers, we have a good sense of its current climate and atmosphere. A new study of ancient sand dunes points to what it might have been like a billion years ago on the red planet. 

A team led by Planetary Science Institute (PSI) research scientist Matthew Chojnacki took a close look a wind-driven dune fields in Valles Marineris, an area of Mars known for its extensive canyons. The dunes appear to have been preserved through lithification, a geologic process that turns sediments into rock.

The team published a study on this window into the martian past in the journal

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Billion-year-old Mars sand dunes let scientists peek into planet’s windy past

The HiRise camera on the Mars Reconnaissance Orbiter snapped these dune fields in Valles Marineris. They’re estimated to be a billion years old


NASA/JPL/University of Arizona

Mars has a roughly 4.5-billion-year history. Thanks to our robotic explorers, we have a good sense of its current climate and atmosphere. A new study of ancient sand dunes points to what it might have been like a billion years ago on the red planet. 

A team led by Planetary Science Institute (PSI) research scientist Matthew Chojnacki took a close look a wind-driven dune fields in Valles Marineris, an area of Mars known for its extensive canyons. The dunes appear to have been preserved through lithification, a geologic process that turns sediments into rock.

The team published a study on this window into the martian past in the journal

Read More
Read More