Biota are found in glaciers, ice sheets and permafrost. Ice bound micro-organisms evolve in a complex mobile environment facilitated or hindered by a range of bulk and surface interactions.
Astrogeology
Posted inAstrogeology
Salt May Be The Key To Life On Earth And Beyond
Key research finding – The composition of the atmosphere, especially the abundance of greenhouse gases, influences Earth’s climate. Researchers at Purdue University, led by Stephanie Olson, assistant professor of earth, […]
Posted inAstrogeology, Beta Pictoris, Exoplanets, -moons, -comets
Trends In Silicates In The β Pictoris Disk
While beta Pic is known to host silicates in ring-like structures, whether the properties of these silicate dust vary with stellocentric distance remains an open question. We re-analyze the beta […]
Posted inAstrochemistry, Astrogeology, Biochemistry & Organic Chemistry, Biosignatures & Paleobiology, Status Report
Periodic Table: Nuclear Origin Of The Elements – And Life
This periodic table is color coded to indicate humanity’s best guess as to the nuclear origin of all known elements. The simplest elements, hydrogen and helium, are far and away […]
Posted inAstrogeology
δ44/40 Ca-δ88/86Sr Multi-proxy Constrains Primary Origin of Marinoan Cap Carbonates
The Neoproterozoic Earth experienced at least two global-scale glaciations termed Snowball Earth events. ‘Cap carbonates’ were widely deposited after the events, but controversy surrounds their origin. Here, we apply the […]
Posted inAstrogeology
Passive Magmatism On Earth And Earth-like Planets
In this article researchers from the Ocean University of China, Qingdao, China, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China, University of Illinois at Urbana-Champaign, Urbana, IL, USA […]
Posted inAstrogeology
Planet Formation Theory In The Era Of ALMA And Kepler: From Pebbles To Exoplanets
Our understanding of planet formation has been rapidly evolving in recent years. The classical planet formation theory, developed when the only known planetary system was our own Solar System, has […]
Posted inAstrogeology
Geophysical Evolution During Rocky Planet Formation
Progressive astronomical characterization of planet-forming disks and rocky exoplanets highlight the need for increasing interdisciplinary efforts to understand the birth and life cycle of terrestrial worlds in a unified picture. […]
Posted inAstrogeology
Traces Of Life In Earth's Deep Mantle
It is easy to see that the processes in the Earth’s interior influence what happens on the surface. For example, volcanoes unearth magmatic rocks and emit gases into the atmosphere, […]
Posted inAstrogeology
Internal Structure and Magnetic Moment of Rocky Planets. Application To The First Exoplanets Discovered By TESS
For a planet to be considered habitable on its surface, it is an important advantage for it to have a magnetic field that protects its atmosphere from stellar winds as […]