Using the Atacama Large Millimeter/submillimeter Array (ALMA), astronomers have detected gaseous water in the planet-forming disc around the star V883 Orionis. This water carries a chemical signature that explains the […]
water world
Posted inAstronomy & Telescopes, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Press Release, Water/Hycean Worlds & Oceanography
Two Exoplanets May Be Mostly Water, NASA’s Hubble and Spitzer Find
A team led by of researchers at the University of Montreal has found evidence that two exoplanets orbiting a red dwarf star are “water worlds,” where water makes up a […]
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 inExoplanets, -moons, -comets, Habitable Zones, Icy Worlds, Water/Hycean Worlds & Oceanography
Density, Not Radius, Separates Rocky And Water-rich Small Planets Orbiting M Dwarf Stars
Exoplanets smaller than Neptune are common around red dwarf stars (M dwarfs), with those that transit their host star constituting the bulk of known temperate worlds amenable for atmospheric characterization. […]
Posted inAstrogeology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Water/Hycean Worlds & Oceanography
Water Worlds Are More Common Than We Thought
Water is the one thing all life on Earth needs, and the cycle of rain to river to ocean to rain is an essential part of what keeps our planet’s […]
Posted inHabitable Zones
Atmospheric Evolution on Low-Gravity Waterworlds
Low-gravity waterworlds (M≲0.1M⊕) are of interest for their potential habitability. The weakly bound atmospheres of such worlds have proportionally larger radiative surfaces and are more susceptible to escape. We conduct […]
Posted inBiosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Press Release, Water/Hycean Worlds & Oceanography
Water Worlds Are Common
Scientists have shown that water is likely to be a major component of those exoplanets (planets orbiting other stars) which are between two to four times the size of Earth. […]
Posted inExoplanets, -moons, -comets, Habitable Zones, Press Release, Water/Hycean Worlds & Oceanography
An Anthropic Prediction for the Prevalence of Water Worlds
Should we expect most habitable planets to share the Earth’s marbled appearance? Terrestrial planets within the habitable zone are thought to display a broad range of water compositions, due to […]
Posted inAstrogeology, Biogeochemical Cycles & Geobiology, Europa, Icy Worlds, Press Release, Water/Hycean Worlds & Oceanography
Europa’s Ocean May Have An Earthlike Chemical Balance
A new NASA study modeling conditions in the ocean of Jupiter’s moon Europa suggests that the necessary balance of chemical energy for life could exist there, even if the moon […]