Pluto – Page 2 – My WordPress Site

Transit spectrum of K2-18 b based on the detection with Kepler (Montet et al. 2015) and characterisation with HST/WFC (Benneke et al. 2017), Spitzer (Benneke et al. 2019), JWST/NIRISS &/NIRSpec (Madhusudhan et al. 2023; Schmidt et al. 2025) and JWST/MIRI (Madhusudhan et al. 2025; Liu et al. 2025). Different panels compare different pipelines for the NIRISS and NIRSpec analyses. -- astro-ph.EP

Astrogeology, Comets and Asteroids, Ganymede, Icy Worlds, Impact events, Jupiter, Pluto, Water/Hycean Worlds & Oceanography

A Gigantic Asteroid Impact Shifted The Axis Of Ganymede

by Keith CowingSeptember 4, 2024September 4, 2024

NASA JPL

Astrochemistry, Astrogeology, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Comets and Asteroids, Icy Worlds, Neptune, Pluto, Triton, Water/Hycean Worlds & Oceanography

Triton and Pluto: Same Origin But Separated At Birth [Two Possible Ocean Worlds]

by Keith CowingJune 7, 2024June 7, 2024

From Chemistry to Life

Astrogeology, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Habitable Zones, Icy Worlds, Pluto, Water/Hycean Worlds & Oceanography

Peering Into Pluto’s Ocean

by Keith CowingMay 23, 2024

Example of alt-azimuth grid overlay on the Heredia dashboard camera video. Perspective lines on the road define the position of the horizon, and the orientation of a lamp post in different video frames (white lines left, slightly bend halfway up) and features on buildings (right) defines the rotation to normal. The flare elevation (assuming an altitude of 25.1 km) defines the scale. In this case, the camera's central azimuth changed over time and the meteor path in the central frame shown was adjusted using the meteor wake as guidance. -- astro-ph.EP

Astrochemistry, Astrogeology, Astronomy & Telescopes, Icy Worlds, Imaging & Spectroscopy, Pluto

Astrogeology/Astrochemistry/Astrobiology Update: New Horizons Detects Dusty Hints Of An Extended Kuiper Belt

by Keith CowingFebruary 20, 2024February 20, 2024

Astrochemistry, Astrogeology, Biogeochemical Cycles & Geobiology, Comets and Asteroids, Habitable Zones, Icy Worlds, Mapping, Geodesy, Cartography, Pluto, Water/Hycean Worlds & Oceanography

Moderate D/H Ratios in Methane Ice on Eris and Makemake as Evidence of Hydrothermal or Metamorphic Processes in Their Interiors: Geochemical Analysis

by Keith CowingFebruary 19, 2024February 20, 2024

Jimmy Carter's Interstellar message - Astrobiology.com

Astrochemistry, Icy Worlds, Pluto, Triton, Water/Hycean Worlds & Oceanography

Surface Volatile Composition as Evidence for Hydrothermal Processes Lasting Longer in Triton’s Interior Than Pluto’s

by Keith CowingDecember 12, 2023December 12, 2023

Astrochemistry, Biosignatures & Paleobiology, Callisto, Enceladus, Europa, Ganymede, Icy Worlds, Imaging & Spectroscopy, Mimas, Pluto, Triton

Spectroscopic Detection of Biosignatures in Natural Ice Samples as a Proxy for Icy Moons

by Keith CowingFebruary 15, 2023February 15, 2023

Enceladus, Europa, Icy Worlds, Pluto, Water/Hycean Worlds & Oceanography

Self-preserving Ice Layers On CO2 Clathrate Particles: Implications For Enceladus, Pluto And Similar Ocean Worlds

by Keith CowingNovember 1, 2021November 30, 2023

Habitable Zones, Icy Worlds, Pluto, Water/Hycean Worlds & Oceanography

Could There Be Life In Pluto's Ocean?

by Keith CowingDecember 1, 2016March 25, 2023

Icy Worlds, Missions & Hardware, Pluto

New Horizons Flyby Gives Opportunity to Revisit Speculations About Water, Nature of Pluto

by Keith CowingJuly 15, 2015March 25, 2023