The goal of planet formation as a field of study is not only to provide the understanding of how planets come into existence.
astrogeology
Posted inAstrogeology, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Caves, Craters, Mountains, Subsurface, Lava Tubes, Exoplanets, -moons, -comets, Icy Worlds, Status Report
Exoplanet Geology: What Can We Learn From Current And Future Observations?
Nearly 30 years after the discovery of the first exoplanet around a main sequence star, thousands of planets have now been confirmed.
Posted inAnalog Studies, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Fossils & Paleontology, Gaia - Planetary Perspectives, Habitable Zones, Origin & Evolution of Life, Status Report, Terraforming & Geoengineering
The Early Earth As An Analogue For Exoplanetary Biogeochemistry
Planet Earth has evolved from an entirely anoxic planet with possibly a different tectonic regime to the oxygenated world with horizontal plate tectonics that we know today.
Posted inAstrogeology, Comets and Asteroids, Meteorites & Asteroids, Status Report
Implantation Of Asteroids From The Terrestrial Planet Region: The Effect Of The Timing Of The Giant Planet Instability
The dynamical architecture and compositional diversity of the asteroid belt strongly constrain planet formation models.
Posted inAstrogeology, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Habitable Zones, Lava / magma ocean / Volcanic Worlds, Mars, Status Report, Venus
The Evolutionary Divergence Of Mars, Venus and Earth
Mars, Venus and Earth are expected to have started in a hot molten state. Here, we discuss how these three terrestrial planets diverged in their evolution and what mechanisms could […]
Posted inAstrochemistry, Astrogeology, Jupiter, Mars, Mercury, Saturn, Status Report, Venus, Water/Hycean Worlds & Oceanography
Formation Of The Four Terrestrial Planets In The Jupiter-Saturn Chaotic Excitation Scenario: Fundamental Properties And Water Delivery
The Jupiter-Saturn chaotic excitation (JSCE) scenario proposes that the protoplanetary disk was dynamically excited and depleted beyond ~1-1.5 au in a few Myr, offering a new and plausible explanation for […]
Posted inBiochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biophysics, Biosignatures & Paleobiology, Origin & Evolution of Life, Press Release
Drawing A Line Back To The Origin Of Life On Earth
Scientists in Cambridge University suggest molecules, vital to the development of life, could have formed from a process known as graphitisation. Once verified in the laboratory, it could allow us […]
Posted inAstrochemistry, Astrogeology, Biochemistry & Organic Chemistry, Biosignatures & Paleobiology, Comets and Asteroids, Meteorites & Asteroids, Space Weather & Heliophysics, Status Report
Laser Irradiation of Carbonaceous Chondrite Simulants: Space Weathering Implications for C-complex Asteroids
Surfaces of carbonaceous asteroids (C-complex) have shown diverse contrasting spectral variations, which may be related to space weathering.
Posted inAstrogeology, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Imaging & Spectroscopy, Io, Jupiter, Press Release
Atmospheric Isotopes Reveal 4.5 Billion Years Of Volcanism On Io
Sulfur and chlorine isotopes in the atmosphere of Jupiter’s moon Io indicate that it has been volcanically active for the entire 4.57 billion-year history of the Solar System, according to […]
Posted inAstrochemistry, Astrogeology, Biosignatures & Paleobiology, Icy Worlds, Imaging & Spectroscopy, Miranda, Neptune, Oberon, Status Report, Titania, Triton, Umbriel, Uranus
JWST Spectrophotometry of the Small Satellites of Uranus and Neptune
We use 1.4-4.6 micron multi-band photometry of the small inner Uranian and Neptunian satellites obtained with the James Webb Space Telescope’s near-infrared imager NIRCam to characterize their surface compositions.