Multiple formation and evolution paths, however, can result in the same planetary architecture. Because of this, unveiling the individual histories of planetary systems and their planets can prove a challenging task. The chemical composition of planets provides us with a guiding light for navigate ...
which resulted in the formation of multiple dust particles and gas. Gravity acted upon these fragments, which began to orbit around the Sun. Over time, the shrapnel from this explosion would eventually combine to form theplanets, as well as many of the smaller celestial bodies found in the so...
“Our results show that our assumptions regarding star and planet compositions were not fundamentally wrong: the composition of rocky planets is indeed intimately tied to the composition of their host star. However, the relationship is not as simple as we expected,” lead author of the study and...
A discussion is given of a number of physical processes which were probably important during the formation of the outer planets if these formed from a gaseous solar nebula in which magnetic effects were not important. Arguments are given that large-scale gravitational instabilities in the solar nebu...
In this work we will review what is already known about the factors influencing the composition of planetary atmospheres, focusing on the case of gaseous giant planets, and what instead still need to be investigated. 展开 关键词: Planetary formation Migration Atmospheres Giant planets Space missions...
The effect of composition on the evolution of giant and intermediate-mass planets. Mon. Not. R. Astron. Soc. 434, 3283–3292 (2013). Article ADS Google Scholar Cassisi, S., Potekhin, A. Y., Pietrinferni, A., Catelan, M. & Salaris, M. Updated electron-conduction opacities: the ...
The earth is composed of a number of layers: a solid crust, a semisolid mantle, and a largely molten (liquid) core that has a solid center. Basic physical features of Earth that may have made the emergence of life possible include the planets size, temperature, composition, and distance ...
Data from the Mars Exploration Rovers (MER) showed that bright dust deposits on opposite sides of the planets had similar compositions, suggesting that the Martian dust comprises a global unit, and is not strongly influenced by the composition of local rocks37. Here we show that a large ...
) discs in the low-mass star-forming regions such as Taurus and Lupus can be sufficiently resolved to expose rings, gaps and spirals in dust, as well as kinematic signatures in gas [11,12,13,14,15], which may either be signatures of planets or the processes that govern their formation....
enrichment as the stellar population forms), whereas low-[α/Fe] stars require periods of star formation that last more than a few billion years (over which timescales type Ia supernovae begin to affect the elemental composition of the interstellar medium more strongly than type II supernovae)...