The structure and composition of simple ices can be modified during stellar evolution by protostellar heating. Key to understanding the involved processes are thermal and chemical tracers that can diagnose […]
CO2
Posted inAstrochemistry, Astrogeology, Biochemistry & Organic Chemistry, Biosignatures & Paleobiology, Europa, Habitable Zones, Icy Worlds, Imaging & Spectroscopy, Status Report, Water/Hycean Worlds & Oceanography
The Distribution Of CO2 On Europa Indicates An Internal Source Of Carbon
Jupiter’s moon Europa has a subsurface ocean, the chemistry of which is largely unknown. Carbon dioxide (CO2) has previously been detected on the surface of Europa, but it was not […]
Posted inAstrochemistry, Astrogeology, Europa, Imaging & Spectroscopy, Press Release
Sulfur Ion Implantations Into Condensed CO2: Implications For Europa
The ubiquity of sulfur ions within the Jovian magnetosphere has led to suggestions that the implantation of these ions into the surface of Europa may lead to the formation of […]
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Habitable Zones, Press Release
Early Earth Forests Did Not Significantly Change Atmospheric CO2
Scientists have discovered that the atmosphere contained far less CO2 than previously thought when forests emerged on our planet, the new study has important implications for understanding how land plants […]
Posted inHabitable Zones, Press Release
Today's Atmospheric Carbon Dioxide Levels Are Greater Than The 23 Million-year Record
A common message in use to convey the seriousness of climate change to the public is: “Carbon dioxide levels are higher today than they have been for the past one […]
Posted inHabitable Zones
How Earth Avoided Global Warming, Last Time Around
Geochemists have calculated a huge rise in atmospheric CO2 was only avoided by the formation of a vast mountain range in the middle of the ancient supercontinent, Pangea. This work […]