An Earth-like planet orbiting an M dwarf — the most common type of star in the universe — appears to have no atmosphere at all. This discovery could cause a […]
Atmospheres, Climate, Weather
Posted inAtmospheres, Climate, Weather, Exoplanets, -moons, -comets, Habitable Zones, Press Release
The Key Factors Controlling the Seasonality of Planetary Climate
Several different factors influence the seasonal cycle of a planet. This study uses a general circulation model and an energy balance model (EBM) to assess the parameters that govern the […]
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Press Release, Water/Hycean Worlds & Oceanography
Water Worlds Could Be Common
Research led by the University of Chicago and the Instituto de Astrofísica de Canarias (IAC) has shown the existence of exoplanets with water and rock around type M dwarf stars, […]
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Habitable Zones, Mars, Press Release
InSight Pressure Data Recalibration, and Its Application to the Study of Long-Term Pressure Changes on Mars
Observations of the South Polar Residual Cap suggest a possible erosion of the cap, leading to an increase of the global mass of the atmosphere.
Posted inAtmospheres, Climate, Weather, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Press Release
Climate Of High Obliquity Exo-terrestrial Planets With A Three-dimensional Cloud System Resolving Climate Model
Planetary climates are strongly affected by planetary orbital parameters such as obliquity, eccentricity, and precession.
Posted inAtmospheres, Climate, Weather, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Press Release
A Catalog Of Habitable Zone Exoplanets
The search for habitable planets has revealed many planets that can vary greatly from an Earth analog environment.
Posted inAnalog Studies, Astrogeology, Atmospheres, Climate, Weather, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Press Release
Variability Due To Climate And Chemistry In Observations Of Oxygenated Earth-analogue Exoplanets
The Great Oxidation Event was a period during which Earth’s atmospheric oxygen (O2) concentrations increased from ∼10−5 times its present atmospheric level (PAL) to near modern levels, marking the start […]
Posted inAstrogeology, Atmospheres, Climate, Weather, Biosignatures & Paleobiology, Caves, Craters, Mountains, Subsurface, Lava Tubes, Mars, Missions & Hardware, Press Release
Perseverance Makes New Discoveries
Scientists got a surprise when NASA’s Perseverance Mars rover began examining rocks on the floor of Jezero Crater in spring of 2021: Because the crater held a lake billions of […]
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Neptune
Can Carbon Fractionation Provide Evidence for Aerial Biospheres in the Atmospheres of Temperate Sub-Neptunes?
The search for signs of life on other worlds has largely focused on terrestrial planets. Recent work, however, argues that life could exist in the atmospheres of temperate sub-Neptunes. Here, […]
Posted inAtmospheres, Climate, Weather
Massive Carbon Emission Caused Marine Anoxia And Biodiversity Loss 304 Million Years Ago
What will happen in the near future as global warming continues? What environmental conditions will life on Earth most likely confront? Episodes of climate change in Earth’s deep past may […]