The correlation between inner super-Earths (SEs) and outer cold Jupiters (CJs) provides an important constraint on the formation and dynamical evolution of planetary systems. Previous studies have suggested a positive […]
Ice Giant
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Gas Giants, Ice Giant, Press Release, Stellar Cartography
Cheops Discovers Late Bloomer Planet From Another Era
Many Vile Earthlings Munch Jam Sandwiches Under Newspapers and My Very Educated Mother Just Served Us Nachos. What sounds like gibberish half-sentences are memory aids taught to children to help […]
Posted inAstrochemistry, Astrogeology, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Gas Giants, Ice Giant, Icy Worlds, Press Release
Key To Researching Large Planets: Research Team Discovers Novel Form Of Water
Temperatures of several thousand degrees Celsius and pressures of millions of atmospheres: superionic water only forms under extreme conditions. These conditions transform water into an unusual state in which hydrogen […]
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Ice Giant, Icy Worlds, Imaging & Spectroscopy, Press Release, Stellar Cartography, Water/Hycean Worlds & Oceanography
Astronomers Find Missing Link To Our Galaxy’s Most Common Planets
One of the biggest recent surprises in astronomy is the discovery that most stars like the Sun harbor a planet between the size of Earth and Neptune within the orbit […]
Posted inAstrochemistry, Astrogeology, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Habitable Zones, Ice Giant, Icy Worlds, Status Report, Water/Hycean Worlds & Oceanography
The Uncertainty In Water Mass Fraction Of Wet Planets
Planets with masses between Earth and Neptune often have radii that imply the presence of volatiles, suggesting that water may be abundant in their interiors. However, directly observing the precise […]
Posted inConferences and Meetings, Ice Giant, Neptune, Status Report, Uranus
OPAG Town Hall at AGU Fall Meeting 2025: December 18
The Outer Planets Assessment Group (OPAG) will hold a Town Hall at the AGU meeting in New Orleans, LA. Please join us for a community discussion! The steering committee will […]
Posted inAstrogeology, Atmospheres, Climate, Weather, Ice Giant, Magnetic Fields, Electromagnetism, bioelectricity,, Neptune, Press Release, Uranus
Uranus And Neptune Might Be Rock Giants
The planets in the Solar System are typically divided into three categories based on their composition: the four terrestrial rocky planets (Mercury, Venus, Earth and Mars), followed by the two […]
Posted inAriel, Astrogeology, Callisto, Ceres, Charon, Dione, Enceladus, Europa, Ganymede, Iapetus, Ice Giant, Icy Worlds, Mapping, Geodesy, Cartography, Bathymetry, Mars, Mimas, Miranda, Missions & Hardware, Moon, Oberon, Phoebe, Pluto, Polar / Alpine Expeditions, Rhea, Status Report, Tethys, Titan, Titania, Triton, Umbriel, Water/Hycean Worlds & Oceanography
Icy Worlds: Moons And Dwarf Planets
In the outer solar system beyond Jupiter, water ice is a dominant component of planetary bodies, and most solid objects in this region are classified as icy bodies.
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Gas Giants, Ice Giant, Imaging & Spectroscopy, Status Report
A JWST Transit Of A Jupiter Analog: II. A Search For Exomoons
We present a search for exomoons around the Jupiter-like exoplanet Kepler-167e using a NIRSpec JWST transit.
Posted inAstrochemistry, Astrogeology, Exoplanets, -moons, -comets, Ice Giant, Missions & Hardware, Neptune, Status Report, Uranus
Ice Giants Pre-Decadal Survey Mission Study Report
The Ice Giants Study was commissioned by NASA to take a fresh look (as of 2017) at science priorities and concepts for missions to the Uranus and Neptune systems in […]