Cristina M Dalle Ore,Christopher J Long,Fiona Nichols-Fleming et al.
Cristina M Dalle Ore et al.
We examine the H2O ice phase on the surface of Dione, one of Saturn's icy satellites, to investigate whether it might harbor cryovolcanic activity induced by a subcrustal body of water. Several studies have searched for such a signature, as...
Betzaida Aponte-Hernández,Edgard G Rivera-Valentín,Michelle R Kirchoff et al.
Betzaida Aponte-Hernández et al.
Morphometric studies of impact craters on icy moons can be used to understand modification of crater topography. Several processes (e.g., viscous relaxation, ejecta deposition, repeated and overlapping impacts) act to shallow crater depth a...
Vincent F Chevrier,Edgard G Rivera-Valentín,Alejandro Soto et al.
Vincent F Chevrier et al.
We combine experimentally verified constraints on brine thermodynamics along with a global circulation model to develop a new extensive framework of brine stability on the surface and subsurface of Mars. Our work considers all major phase c...
Taylor K Safrit,Jordan K Steckloff,Amanda S Bosh et al.
Taylor K Safrit et al.
Recent spacecraft and radar observations have found that ~70 percent of short-period comet nuclei, mostly Jupiter-family comets (JFCs), have bilobate shapes (two masses connected by a narrow neck). This is in stark contrast to the shapes of...
Chromium Isotopic Evidence for Mixing of NC and CC Reservoirs in Polymict Ureilites: Implications for Dynamical Models of the Early Solar System [0.03%]
聚合球粒陨石中铬同位素的混合证据：对早期太阳系动力学模型的意义
Cyrena A Goodrich,Matthew E Sanborn,Qing-Zhu Yin et al.
Cyrena A Goodrich et al.
Nucleosynthetic isotope anomalies show that the first few million years of solar system history were characterized by two distinct cosmochemical reservoirs, CC (carbonaceous chondrites and related differentiated meteorites) and NC (the terr...
Comet 41P/Tuttle-Giacobini-Kresak, 45P/Honda-Mrkos-Pajdusakova, and 46P/Wirtanen: Water Production Activity over 21 Years with SOHO/SWAN [0.03%]
基于SOHO/SWAN的41P/ Tuttle-Giacobini-Kresak，45P/Honda-Mrkos-Pajdusakova和46P/Wirtanen彗星21年的水蒸发量研究
M R Combi,T Mäkinen,J-L Bertaux et al.
M R Combi et al.
In 2017, 2018, and 2019, comets 46P/Wirtanen, 45P/Honda-Mrkos-Pajdusakova, and 41P/Tuttle-Giacobini-Kresak all had perihelion passages. Their hydrogen comae were observed by the Solar Wind ANisotropies (SWAN) all-sky hydrogen Lyman-alpha ca...
New Illumination and Temperature Constraints of Mercury's Volatile Polar Deposits [0.03%]
新的水银挥发性极地沉积物的照明和温度限制
Colin D Hamill,Nancy L Chabot,Erwan Mazarico et al.
Colin D Hamill et al.
Images from the Mercury Dual Imaging System (MDIS) aboard the MErcury Surface, Space ENvironment, GEochemistry, and Ranging mission reveal low-reflectance polar deposits that are interpreted to be lag deposits of organic-rich, volatile mate...
Jordan K Steckloff,Jason M Soderblom,Kendra K Farnsworth et al.
Jordan K Steckloff et al.
Saturn's moon Titan is the only extraterrestrial body known to host stable lakes and a hydrological cycle. Titan's lakes predominantly contain liquid methane, ethane, and nitrogen, with methane evaporation driving its hydrological cycle. Mo...