For the first time, NASA’s James Webb Space Telescope has captured bright auroral activity on Neptune. Auroras occur when energetic particles, often originating from the Sun, become trapped in a […]
Neptune
Posted inExoplanets, -moons, -comets, Icy Worlds, Neptune, Press Release, Venus
Super-Earth vs. Sub-Neptune? The Winner is Super-Venus
New observational data from the James Webb Space Telescope and simulation models have confirmed a new type of planet unlike anything found in the Solar System. This provides another piece […]
Posted inAstronomy & Telescopes, Imaging & Spectroscopy, Jupiter, Neptune, Press Release, Saturn, Uranus
Hubble Celebrates A Decade Of Tracking Outer Planets
Encountering Neptune in 1989, NASA’s Voyager mission completed humankind’s first close-up exploration of the four giant outer planets of our solar system. Collectively, since their launch in 1977, the twin […]
Posted inAstrogeology, Atmospheres, Climate, Weather, Ice Giant, Icy Worlds, Neptune, Press Release, Uranus, Water/Hycean Worlds & Oceanography
A Clue To What Lies Beneath The Bland Surfaces Of Uranus And Neptune
Diamond rain? Super-ionic water? These are just two proposals that planetary scientists have come up with for what lies beneath the thick, bluish, hydrogen-and-helium atmospheres of Uranus and Neptune, our […]
Posted inAstrogeology, Icy Worlds, Imaging & Spectroscopy, Mapping, Geodesy, Cartography, Bathymetry, Missions & Hardware, Neptune, Status Report, Triton, Water/Hycean Worlds & Oceanography
Enhanced Voyager 2 Approach Image Sequence Of Icy Ocean World Triton
Original Caption Released with Image: Triton Voyager 2 approach sequence with latitude-longitude grid superposed. The color image was reconstructed by making a computer composite of three black and white images […]
Posted inAstrochemistry, Astrogeology, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Ice Giant, Icy Worlds, Neptune, Status Report, Uranus, Water/Hycean Worlds & Oceanography
H2-H2O Demixing In Uranus And Neptune: Adiabatic Structure Models
Demixing properties of planetary major constituents influence the interior structure and evolution of planets. Comparing experimental and computational data on the miscibility of hydrogen and water to adiabatic profiles suggests […]
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Gas Giants, Habitable Zones, Ice Giant, Imaging & Spectroscopy, Neptune, Status Report
Effects of Planetary Parameters on Disequilibrium Chemistry in Irradiated Planetary Atmospheres: From Gas Giants to Sub-Neptunes
A primary goal of characterizing exoplanet atmospheres is to constrain planetary bulk properties, such as their metallicity, C/O ratio, and intrinsic heat. However, there are significant uncertainties in many aspects […]
Posted inAstrochemistry, Atmospheres, Climate, Weather, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Neptune, Status Report
Possible Carbon Dioxide Above The Thick Aerosols Of sub-Neptune GJ 1214 b
Sub-Neptune planets with radii smaller than Neptune (3.9 Re) are the most common type of planet known to exist in The Milky Way, even though they are absent in the […]
Posted inAstrochemistry, Astrogeology, Atmospheres, Climate, Weather, Biochemistry & Organic Chemistry, Biosignatures & Paleobiology, Enceladus, Europa, Ganymede, Gas Giants, Icy Worlds, Imaging & Spectroscopy, Io, Jupiter, Mapping, Geodesy, Cartography, Bathymetry, Neptune, Saturn, Status Report, Titan, Uranus
Sulfur in the Giant Planets, their Moons, and Extrasolar Gas Giant Planets
We review sulfur chemistry of the gas giant planets and their moons where sulfur compounds are observed. The major S-bearing gas in the upper atmospheres of the giant planets is […]
Posted inIcy Worlds, Neptune, Status Report, Triton, Water/Hycean Worlds & Oceanography
The Trans- And Post-Capture Orbital Evolution Of Triton
Triton is a unique moon in our Solar System, being the only large moon to orbit on a retrograde and highly inclined orbit. As a result, it is thought that […]