Results 1 to 10 of about 4,987 (141)

Assessing the Detectability of Europa’s Seafloor Topography from Europa Clipper’s Gravity Data

open access: yesThe Planetary Science Journal, 2022
Due to its size and tidal heating, Europa may potentially possess active volcanism and hydrothermal circulation at its seafloor. The upcoming Europa Clipper mission provides the opportunity to obtain global gravity maps over a range of spatial scales, up
Ze-Wen Koh   +4 more
doaj   +1 more source

Stratigraphy, Crater Size–Frequency Distribution, and Chronology of Selected Areas of Ganymede’s Light and Dark Terrains

open access: yesThe Planetary Science Journal, 2023
The stratigraphy of the largest natural satellite of our solar system, Ganymede, is investigated using available global mosaic (basemap) and high-resolution images. We are focusing on the reconstruction of the formation and tectonic evolution of selected
Namitha Rose Baby   +3 more
doaj   +1 more source

Experimental Validation of Cryobot Thermal Models for the Exploration of Ocean Worlds

open access: yesThe Planetary Science Journal, 2023
Accessing the potentially habitable subsurface waters of Ocean Worlds requires a robotic ice probe (or “cryobot”) to traverse tens of kilometers of ice with temperatures ranging from ∼100 to 273 K.
Paula do Vale Pereira   +19 more
doaj   +1 more source

Astrometry of mutual approximations between natural satellites. Application to the Galilean moons [PDF]

open access: yes, 2016
Typically we can deliver astrometric positions of natural satellites with errors in the 50-150 mas range. Apparent distances from mutual phenomena, have much smaller errors, less than 10 mas. However, this method can only be applied during the equinox of
Assafin, M.   +5 more
core   +1 more source

Jupiter’s Early Luminosity May Have Driven off Io’s Initial Water Inventory

open access: yesThe Planetary Science Journal, 2023
After its formation, Jupiter was substantially more luminous than it is at the present day (10 ^4 times). Right after formation, the inner satellites Io and Europa would have received an order-of-magnitude larger incoming flux from Jupiter, than solar ...
Carver J. Bierson   +3 more
doaj   +1 more source

Thermal infrared spectroscopy of Europa and Callisto [PDF]

open access: yes, 2000
The trailing hemispheres of Europa and Callisto were observed at 9–13 μm, and a spectrum of Europa with better spectral resolution and a better signal-to-noise ratio than was previously possible has been derived.
Brown, Michael E., Mills, Franklin P.
core   +1 more source

Thermal Properties of the Leading Hemisphere of Callisto Inferred from ALMA Observations

open access: yesThe Planetary Science Journal, 2023
We present a thermal observation of Callisto's leading hemisphere obtained using the Atacama Large Millimeter/submillimeter Array at 0.87 mm (343 GHz).
Maria Camarca   +7 more
doaj   +1 more source

Early Stages of Galilean Moon Formation in a Water-depleted Environment

open access: yesThe Astrophysical Journal Letters, 2023
A key feature of the Galilean satellite system is its monotonic decrease in bulk density with growing distance from Jupiter, indicating an ice mass fraction that is zero in the innermost moon Io and about half in the outer moons Ganymede and Callisto ...
Olivier Mousis   +5 more
doaj   +1 more source

Magnetospheric considerations for solar system ice state [PDF]

open access: yes, 2018
The current lattice configuration of the water ice on the surfaces of the inner satellites of Jupiter and Saturn is likely shaped by many factors. But laboratory experiments have found that energetic proton irradiation can cause a transition in the ...
Blaney, D.   +10 more
core   +1 more source

Probing Ganymede’s Atmosphere with HST Lyα Images in Transit of Jupiter

open access: yesThe Planetary Science Journal, 2023
We report results from far-ultraviolet observations by the Hubble Space Telescope of Jupiter’s largest moon, Ganymede, transiting across the planet’s dayside hemisphere.
Lorenz Roth   +8 more
doaj   +1 more source

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