Rocky planets are thought to form with a magma ocean that quickly solidifies. The horizontal and vertical extent of this magma ocean depends on the interior thermal evolution of the […]
Water/Hycean Worlds & Oceanography
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Extinction events, Fossils & Paleontology, Gaia - Planetary Perspectives, Habitable Zones, Origin & Evolution of Life, Press Release, Water/Hycean Worlds & Oceanography
Carbon Dioxide Has Driven Drastic Changes In Earthโs Global Temperature Over The Past 485 Million years
A new study co-led by the Smithsonian and the University of Arizona offers the most detailed glimpse yet of how Earthโs surface temperature has changed over the past 485 million […]
Posted inAstrogeology, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Caves, Craters, Mountains, Subsurface, Lava Tubes, Extinction events, Fossils & Paleontology, Gaia - Planetary Perspectives, Impact events, Mapping, Geodesy, Cartography, Bathymetry, Press Release, Water/Hycean Worlds & Oceanography
Earth May Have Had A Ring System 466 Million Years Ago
In a discovery that challenges our understanding of Earthโs ancient history, researchers have found evidence suggesting that Earth may have had a ring system, which formed around 466 million years […]
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Imaging & Spectroscopy, Status Report, Water/Hycean Worlds & Oceanography
Orbital Biosignature Survey: Lake Erie Algal Bloom
Editorโs note: with the future advent of powerful telescopes that may be able to resolve habitable worlds in images composed of a few pixels, large biological phenomena such as algal […]
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Gaia Mission, Imaging & Spectroscopy, Status Report, Water/Hycean Worlds & Oceanography
Characterisation of TOI-406 as Showcase of the THIRSTEE program: A 2-Planet System Straddling the M-dwarf Density Gap
The exoplanet sub-Neptune population currently poses a conundrum. Are small-size planets volatile-rich cores without atmosphere, or are they rocky cores surrounded by H-He envelope? To test the different hypotheses from […]
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Gaia - Planetary Perspectives, Habitable Zones, Status Report, Water/Hycean Worlds & Oceanography
Substantial Extension of the Lifetime of the Terrestrial Biosphere
Approximately one billion years (Gyr) in the future, as the Sun brightens, Earth’s carbonate-silicate cycle is expected to drive CO2 below the minimum level required by vascular land plants, eliminating […]
Posted inAstrochemistry, Astrogeology, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Habitable Zones, Lava / magma ocean / Volcanic Worlds, Meteorites & Asteroids, Status Report, Water/Hycean Worlds & Oceanography
Evolution of Gas Envelopes and Outgassed Atmospheres of Rocky Planets Formed via Pebble Accretion
We present here results of numerical simulations of the formation and early evolution of rocky planets through pebble accretion, with an with an emphasis on hydrogen envelope longevity and the […]
Posted inAnalog Studies, Away Teams & Field Reports, Exploration Gear & Tech, Extremeophiles and Extreme Environments, Habitable Zones, Mapping, Geodesy, Cartography, Bathymetry, Press Release, ROVs/Submersibles/Diving, Water/Hycean Worlds & Oceanography
Scientific Exploration Of The Jรธtul Hydrothermal Vent Field
The Jรธtul hydrothermal vent field is located on the Knipovich Ridge, which can be found east of Greenland in the northernmost Norwegian-Greenland Sea.
Posted inAstrogeology, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Europa, Habitable Zones, Icy Worlds, Jupiter, Missions & Hardware, Press Release, Water/Hycean Worlds & Oceanography
8 Things To Know About NASAโs Astrobiology Mission To Ocean World Europa
The first NASA spacecraft dedicated to studying an ocean world beyond Earth, Europa Clipper aims to find out if the ice-encased moon Europa could be habitable.
Posted inAlpha Centauri, Astrogeology, Beta Pictoris, Ceres, Exoplanets, -moons, -comets, Gas Giants, Icy Worlds, Jupiter, Lava / magma ocean / Volcanic Worlds, Mapping, Geodesy, Cartography, Bathymetry, Mars, Mercury, Neptune, Pluto, Proxima Centauri, Saturn, Status Report, tau Ceti, TRAPPIST-1, Uranus, Venus, Water/Hycean Worlds & Oceanography
Classifications For Exoplanet and Exoplanetary Systems
When a star is described as a spectral class G2V, we know its approximate mass, temperature, age, and size. At more than 5,700 exoplanets discovered, it is a natural developmental […]