R M C Lopes,M J Malaska,A M Schoenfeld et al.
R M C Lopes et al.
Titan has an active methane-based hydrologic cycle1 that has shaped a complex geologic landscape2, making its surface one of most geologically diverse in the solar system. Despite the different materials, temperatures, and gravity fields be...
Surface clay formation during short-term warmer and wetter conditions on a largely cold ancient Mars [0.03%]
早期火星长期寒冷伴间歇性变暖变湿的证据：短时温暖湿润条件下地表黏土物质形成
Janice L Bishop,Alberto G Fairén,Joseph R Michalski et al.
Janice L Bishop et al.
The ancient rock record for Mars has long been at odds with climate modelling. The presence of valley networks, dendritic channels and deltas on ancient terrains points towards running water and fluvial erosion on early Mars1, but climate m...
Evidence of presolar SiC in the Allende Curious Marie calcium aluminum rich inclusion [0.03%]
艾伦德好奇玛丽钙铝包体中球状星簇硅 carbide的太阳前证据
O Pravdivtseva,F L H Tissot,N Dauphas et al.
O Pravdivtseva et al.
Calcium aluminum rich inclusions (CAIs) are one of the first solids to have condensed in the solar nebula, while presolar grains formed in various evolved stellar environments. It is generally accepted that CAIs formed close to the Sun at t...
Prevalence of non-aromatic carbonaceous molecules in the inner regions of circumstellar envelopes [0.03%]
恒星周围包层内区非芳香族碳氢化合物的普遍存在性研究
Lidia Martínez,Gonzalo Santoro,Pablo Merino et al.
Lidia Martínez et al.
Evolved stars are a foundry of chemical complexity, gas and dust that provides the building blocks of planets and life, and dust nucleation first occurs in their photosphere. Despite their importance, the circumstellar regions enveloping th...
Evidence for widespread hydrated minerals on asteroid (101955) Bennu [0.03%]
在小行星(101955)本努上广泛存在含水矿物的证据
V E Hamilton,A A Simon,P R Christensen et al.
V E Hamilton et al.
Early spectral data from the Origins, Spectral Interpretation, Resource Identification, and Security-Regolith Explorer (OSIRIS-REx) mission reveal evidence for abundant hydrated minerals on the surface of near-Earth asteroid (101955) Bennu ...
Marc Neveu,Alyssa R Rhoden
Marc Neveu
The orbits of Saturn's inner mid-sized moons (Mimas, Enceladus, Tethys, Dione, and Rhea) have been notably difficult to reconcile with their geology. Here, we present numerical simulations coupling thermal, geophysical, and simplified orbit...
Accurate mass and radius determinations of a cool subdwarf in an eclipsing binary [0.03%]
食双星中一个冷子矮星的精确质量和半径测定值
Alberto Rebassa-Mansergas,Steven G Parsons,Vikram S Dhillon et al.
Alberto Rebassa-Mansergas et al.
Cool subdwarfs are metal-poor low-mass stars that formed during the early stages of the evolution of our Galaxy. Because they are relatively rare in the vicinity of the Sun, we know of few cool subdwarfs in the solar neighbourhood, and none...
Flying into the Sun [0.03%]
飞向太阳
Adam Szabo
Adam Szabo
After 60 years of technological and materials development, in August this year the Parker Solar Probe set off on its journey to skim the atmosphere of the Sun. Mission Scientist Adam Szabo summarizes this ambitious adventure.
Biosignature hide and seek [0.03%]
生物标志物捉迷藏游戏
John F Cooper
John F Cooper
A new model predicts locations on the surface of radiation-blasted Europa, the ocean moon of Jupiter, where biochemical signatures of life emergent from the subsurface ocean might survive long enough for detection on the moon's changing sur...
The anomalous state of Uranus's magnetosphere during the Voyager 2 flyby [0.03%]
旅行者2号飞掠期间尤拉诺斯磁层的异常状态
The Voyager 2 flyby of Uranus in 1986 revealed an unusually oblique and off-centred magnetic field. This single in situ measurement has been the basis of our interpretation of Uranus's magnetosphere as the canonical extreme magnetosphere of...