dwarf planet Encyclopedia Wikipedia n. A celestial body that orbits the sun and is massive enough to assume a nearly spherical shape, but that does not clear other bodies from the neighborhood around its orbit and is not a satellite of a planet. See Usage Note atplanet. ...
Chemical abundances of stars with brown-dwarf companions 更多...Physics 2015 What are little worlds made of? Stellar abundances and the building blocks of planetsDOI: 10.1088/0004-637X/804/1/40Eric GaidosFull-Text Cite this paper Add to My Lib Abstract: If the photospheres of solar-type ...
Eric GaidosThe Astrophysical JournalE. Gaidos. What are little worlds made of? Stellar abundances and the building blocks of planets. ApJ, in press, 2015.
The ultra-red, peanut-shaped object is called Arrokoth. Itsits(坐落于)1 billion miles beyond Pluto in the Kuiper Belt, a vast donut-shaped region thatis home to(是...的家园)thousands ofdwarf planets(矮行星)and icy obje...
All the planets and dwarf planets, the rocky asteroids, and the icy bodies in the Kuiper belt move around the Sun in elliptical orbits in the same direction that the Sun rotates. This motion is termed prograde, or direct, motion. Looking down on the system from a vantage point above Earth...
What are dwarf planets? Learn about the dwarf planets within our solar system and their characteristics. Understand the differences between a planet and a dwarf planet. Related to this Question What is Ceres atmosphere made of? What is Neptune's atmosphere made of?
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Only high-confidence white dwarf candidates (PWD ≥ 0.9) in the Gaia EDR3 white dwarf catalogue69 are considered. The CDF is broken down into three MG bins that span the range of magnitudes covered in our analysis of the Q branch. For the faintest bin, the sample has a very high ...
Earth’s earliest continental crust is dominated by tonalite–trondhjemite–granodiorite (TTG) suites, making these rocks key to unlocking the global geodynamic regime operating during the Archaean (4.0–2.5 billion years ago [Ga]). The tectonic setting
Gaseous Mean Opacities for Giant Planet and Ultracool Dwarf Atmospheres over a Range of Metallicities and Temperatures. Astrophys. J. Suppl. Ser. 2014, 214, 25. [Google Scholar] [CrossRef] Guillot, T.; Gautier, D.; Chabrier, G.; Mosser, B. Are the Giant Planets Fully Convective? Icarus...