C. To compare the composition of Jupiter, Saturn, Uranus, and Neptune. D. To explain why young stars are often surrounded by disks of gas and dust. 你的答案: 正确答案:B 题目解析: 登录 后才能查看题目解析,还没有账号? 马上注册 推荐文章: 【托福听力】Official 48-L1 关于上波兰语课程的建议...
Question 1 of 6 What is the main purpose of the lecture? A. To describe two new theories about the formation of rocky planets B. To discuss competing theories about the formation of gas planets C. To compare the composition of Jupiter, Saturn, Uranus, and Neptune D. To explain why young...
托福新托福 38 - The Formation Of Gas Planets 材料音频 去精听 查看全文 题目 L3 123456 A . To describe two new theories about the formation of rocky planets. B . To discuss competing theories about the formation of gas planets. C . To compare the composition of Jupiter, Saturn, Uranus, an...
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This change of composition changes the luminosity, temperature, size, and interior structure of the star. When a star’s luminosity and temperature begin to change, the point that represents the star on the H–R diagram moves away from the zero-age main sequence. Calculations show that the ...
Most main sequence stars are nearly completely composed of hydrogen and helium. Some have a small percentage of heavier elements, such as carbon or oxygen. Scientists can analyze the composition of a main sequence star by studying the light that they emit....
The presentation emphasizes the mission's unique capabilities for studying the chemistry of exoplanet atmospheres and its potential to contribute to our understanding of planet formation and evolution.Key points:Ariel will be the first mission dedicated to studying the chemical composition and thermal ...
4, and further points to an expected difference in the observed composition of outgassing species between MBCs and JFCs. 8 Future prospects In this section, we consider what options we will have for searching for water in MBCs in the coming years, both from ground- and space-based ...
Analyses of solar wind samples collected by the Genesis mission have allowed the oxygen isotopic composition of the Sun to be estimated (McKeegan et al. 2011). 1.2 Why do We Need Samples from the Asteroid Belt? While NEAs have been sampled by the Hayabusa mission (Nakamura et al. 2011) ...
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