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Tag Archives: Oceanus Borealis
Did Mars Pathfinder explore edge of northern ocean?
NASA’s first rover mission to Mars, the Pathfinder, imaged an extraterrestrial marine spillover landscape 22 years ago, according to a new paper by Planetary Science Institute Senior Scientist Alexis Rodriguez. The landing site is on the spillway of an ancient … Continue reading
Posted in Reports
Tagged Ares Vallis, catastrophic floods, Mars Pathfinder, Oceanus Borealis, outflow channels, Simud Valles, Sojourner rover, Tiu Valles
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Did impact-generated tsunamis make ‘thumbprint terrain’?
Thirty years ago, during a 3-month long visit to the U.S. Geological Survey in Arizona, Francois Costard saw Viking orbiter images of Mars’s northern plains showing strange curving features along the boundary between the Martian northern and southern hemispheres. Costard, … Continue reading
Mega-tsunamis likely altered Mars landscape
The geologic shape of what were once shorelines through Mars’ northern plains convinces scientists that two large meteorites – hitting the planet millions of years apart – triggered a pair of mega-tsunamis. These gigantic waves forever scarred the Martian landscape … Continue reading
Mars has lost an ‘Arctic Ocean’ of water
A primitive ocean on Mars held more water than Earth’s Arctic Ocean, and covered a greater portion of the planet’s surface than the Atlantic Ocean does on Earth, according to new results published today in Science. An international team of … Continue reading
MARSIS detects “Oceanus Borealis” sediments
The ground-penetrating radar instrument MARSIS on the Mars Express orbiter has measured the electrical properties of the north and south polar regions. The results, reported in Geophysical Research Letters by Jérémie Mouginot (University of California, Irvine) and colleagues, strongly support … Continue reading
Posted in Reports
Tagged climate change, ice, Mars Express, MARSIS, Oceanus Borealis, Phoenix, Vastitas Borealis Formation
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A polar ocean leaves few clay deposits
The northern lowlands of Mars have long invited the notion that in ancient times they once contained a now-vanished polar ocean. Yet a longstanding argument against such was the lack of widespread clay minerals that would naturally occur with such … Continue reading
Posted in Reports
Tagged clay minerals, glaciers, Oceanus Borealis, phyllosilicates, polar ocean
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