Callisto – Page 4 – My WordPress Site

The peak temperature achieved by all tracer particles in simulations of a 1 km diameter comet impacting at 10 km s−1 (left) and 40 km s−1 (right) in a provenance plot, where the tracers are shown at their initial locations prior to the impact. A solid black line is shown between the two halves of the figure to delineate the difference between the two simulations. The 10 km s−1 impact on the left shows a peak temperature of ∼ 8900 K, whereas the 40 km s−1 impact on the right achieves a peak temperature of ∼ 74 000 K. Although the range of temperatures achieved during the two impacts is vastly different, the distribution of temperatures is similar, with a sharp increase in temperatures at the leading edge and raised temperatures towards the centre of the body. -- astro-ph.EP

Biosignatures & Paleobiology, Callisto, Europa, Ganymede, Gas Giants, Icy Worlds, Imaging & Spectroscopy, Io, Jupiter, Missions & Hardware, Water/Hycean Worlds & Oceanography

Jupiter Science Enabled by ESA’s Jupiter Icy Moons Explorer

by Keith CowingMay 7, 2023April 14, 2024

Away Teams & Field Reports, Callisto, Europa, Ganymede, Icy Worlds, Missions & Hardware, Water/Hycean Worlds & Oceanography

JUICE Leaves Earth On An Astrobiology Expedition To Jupiter’s Ocean Moons

by Keith CowingApril 14, 2023April 14, 2023

Callisto, Europa, Ganymede, Habitable Zones, Icy Worlds, Jupiter, Missions & Hardware, Water/Hycean Worlds & Oceanography

Spotlight On Ganymede, JUICE’s Primary Target

by Keith CowingApril 12, 2023November 17, 2023

Members of the research team walk across the surface of Last Chance Lake in September 2022. At the end of the summer, the water has almost all evaporated, leaving a salty crust on the surface. But water persists below in pockets and hollows, and soft sediments sit beneath, creating a somewhat treacherous crème brûlée structure to walk on. Zack Cohen/University of Washington

Callisto, Europa, Ganymede, Icy Worlds, Imaging & Spectroscopy, Space Weather & Heliophysics

The Optical Aurorae of Europa, Ganymede and Callisto

by Keith CowingFebruary 17, 2023February 17, 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

The deep-sea hydrothermal vent site known as ‘Crab Spa’ on the East Pacific Rise. (Photo courtesy of Stefan Sievert, WHOI/NSF/HOV Alvin, © Woods Hole Oceanographic Institution)

Astrobiology (general), Biosignatures & Paleobiology, Callisto, Europa, Ganymede, Icy Worlds, Io, Jupiter, Missions & Hardware

Introducing Juice’s Odyssey Of Exploration – And Astrobiology

by Keith CowingFebruary 15, 2023November 17, 2023

Biogeochemical Cycles & Geobiology, Callisto, Icy Worlds, Imaging & Spectroscopy

Callisto’s Atmosphere: First Evidence For H2 And Constraints On H2O

by Keith CowingOctober 26, 2022October 26, 2022

Callisto, Europa, Ganymede, Icy Worlds, Jupiter

Thermal Conductivity Measurements Of Macroscopic Frozen Salt Ice Analogs Of Jovian Icy Moons In Support Of The Planned JUICE Mission

by Keith CowingDecember 12, 2021November 17, 2023

Callisto, Ganymede

A Tenuous, Collisional Atmosphere On Callisto

by Keith CowingJuly 26, 2021