A cold-wet mid-latitude environment on Mars during the Hesperian-Amazonian Transition: Evidence from northern Arabia Valleys and Paleolakes
Editors’ Highlight— The paper provides careful documentation of a series of relatively fresh fluvial landforms across the mid-latitudes. The authors make a compelling case that these "fresh shallow valleys" formed relatively late in Mars history, sometime between the Hesperian and Mid-Amazonian. Unlike.... more
The collapse of Io's primary atmosphere in Jupiter eclipse
Editors’ Highlight— The issue whether sublimation from the surface or volcanoes primarily sustain Io's sulfur-rich atmosphere has been debated for more than 20 years. This paper presents the first direct observations of a collapse of the atmosphere when the moon goes into shadow, indicating that sublimation.... more
Odd behavior of Jovian moon dust could inform future space missions, search for life
Blog Post— New research into the movements of dust around Jupiter’s four largest moons could help scientists searching for life in our solar system, according to a new study… more more
A Cluster of Water Seeps on Mars?
From Eos.org: Research Spotlights— The discovery of dense concentrations of recurring flowlike features in two Valles Marineris chasms could aid in the search for life and influence future exploration of the Red Planet. One of the most significant discoveries revealed by the Mars Reconnaissance Orbiter.... more
Reconstructing Catastrophic Floods on Earth and Mars
From Eos.org: Research Spotlights— A new theoretical model suggests that ancient floods that carved canyons on Earth and Mars may have been much smaller but lasted longer than previously thought. Catastrophic floods dramatically altered ancient landscapes on Earth and Mars, and their scars linger today..... more
Carbon Dioxide Frost May Keep Martian Soil Dusty
From Eos.org: Research Spotlights— Teaser: Temperature readings acquired from orbit show that Mars’s surface gets cold enough at night to allow layers of solid carbon dioxide frost up to several hundred micrometers thick to build up near the equator. Much of the discussion surrounding science on Mars.... more
The formation of the South Tharsis Ridge Belt: Basin and Range-style extension on early Mars?
Editors’ Highlight— This paper explores the intriguing hypothesis that one region of Mars, the South Tharsis Ridge Belt, resembles the extensional Basin and Range province on Earth. It sheds a new light on possible tectonic processes on Early Mars. more
Reflection imaging of the Moon's interior using deep-moonquake seismic interferometry
Editors’ Highlight— This paper describes the first use of the seismic interferometry technique as applied to the Moon. The results reveal a layer at a depth of about 50 km below the Apollo seismic stations, which provides an independent estimate of the thickness of the lunar crust. more
Curiosity Sends Curious Water Data from Mars
From Eos.org: Research Spotlights— The rover’s neutron spectroscopy instrument hints at an unexpected trend: The upper soil levels in the layers of Gale Crater’s Kimberley formation seem to hold more water-associated hydrogen. On 6 August 2012, NASA’s Curiosity rover landed on a Martian plain in the.... more
Thicknesses of mare basalts on the Moon from gravity and topography
Editors’ Highlight— This paper provides new estimates of the thickness of the mare on the Moon derived from recent high quality measurements of the Moon's gravity field by the GRAIL spacecraft. The mare are large volcanic deposits that form the dark features we see on the Moon. They record a critical.... more
Eos.org: Earth & Space Science News
Earth's Future Receives First Impact Factor
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- A cold-wet mid-latitude environment on Mars during the Hesperian-Amazonian Transition: Evidence from northern Arabia Valleys and Paleolakes
- The collapse of Io's primary atmosphere in Jupiter eclipse
- Odd behavior of Jovian moon dust could inform future space missions, search for life
- A Cluster of Water Seeps on Mars?
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