Mystery of the double-ringed craters of Mars solved: Scientists say formations were created by ice sheets that were TENS of metres thick
11 years, 7 months ago

Mystery of the double-ringed craters of Mars solved: Scientists say formations were created by ice sheets that were TENS of metres thick

Daily Mail  

Mystery of the double-ringed craters of Mars solved: Scientists say formations were created by ice sheets that were TENS of metres thick Geologists believe double-layered ejecta craters were formed as a result of hundreds of blasts on the once icy surface of Mars The craters are unusual in that they have an outer and inner layer of debris The theory could help reconstruct the history of the Martian climate Geologists believe a thick sheet of ice once covering Mars could explain the formation of a mysterious type of crater on its surface. Grooves, common in landslides on Earth, radiate out from the crater rim Geologists believe these craters were formed as a result of hundreds of blasts on the Martian surface once covered by a layer of ice tens of meters thick. These are areas where scientists believe there may once have been glacial ice on Mars millions of years ago THE MYSTERY CRATERS Double-layered ejecta craters or DLEs, like other craters, are surrounded by debris excavated by an impactor. DLEs appear at middle or high latitudes- areas where scientists believe there may once have been glacial ice on Mars millions of years ago.

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Subsurface ice, young craters and more: Remarkable new discoveries made by NASA’s InSight spacecraft as it prepares to say goodbye
2 years, 4 months ago

Subsurface ice, young craters and more: Remarkable new discoveries made by NASA’s InSight spacecraft as it prepares to say goodbye

The Hindu  

Mars InSight lander, National Aeronautics and Space Administration’s spacecraft, is nearing its end. On December 24, 2021, the spacecraft had detected a magnitude 4 marsquake on the red planet, and almost a year later, the scientists have figured out the cause for the quake – a meteoroid strike, “estimated to be one of the biggest seen on Mars since NASA …

Mystery of double-ringed Mars craters solved
11 years, 7 months ago

Mystery of double-ringed Mars craters solved

The Hindu  

A thick sheet of ice once covering Mars could explain the formation of over 600 mysterious double-layered craters on the surface of the Red planet, geologists say. Ejected material would later slide down steep crater sides and across the ice, forming a second layer, researchers said. A new study by Brown University graduate student David Kutai Weiss and James W …

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