The Milky Way has a ___ structure. A. round B. square C. spiral D. triangular 相关知识点: 试题来源: 解析 C。中文解析:文章中明确提到“The Milky Way is a vast galaxy that contains billions of stars. It has a spiral structure”,银河系有螺旋结构。反馈 ...
Galaxy:structureGalaxy:bulgeGalaxy:kinematics and dynamicsgalaxies:spiralgalaxies:structureThe Milky Way is a spiral galaxy with the Schechter characteristic luminosity L_*, thus an important anchor point of the Hubble sequence of all spiral galaxies. Yet the true appearance of the Milky Way has remai...
galaxy: structureastrobiologysolar neighbourhoodWe use the most up to date Milky Way model and solar orbit data in order to test the hypothesis that the Sun's galactic spiral arm crossings cause mass extinction events on Earth. To do this, we created a new model of the Milky Way's spiral ...
百度试题 结果1 题目What is the structure of the Milky Way galaxy? A. Elliptical. B. Spiral. C. Irregular. D. Round. 相关知识点: 试题来源: 解析 B。解析:文章中明确提到“The galaxy has a spiral structure”,银河系是螺旋结构。反馈 收藏 ...
Star Counts and the Milky Way Structure 来自 Semantic Scholar 喜欢 0 阅读量: 15 作者: AC Robin 摘要: While the accuracy of photometric star counts rises, constraints on the stellar population characteristics improve and allow synthetic models to be conceived to explain the galactic structure. ...
The Milky Way is a massive structure, spanning between 170,000 and 200,00 light-years. It’s uncertain how many stars it contains with estimates ranging from 100 billion to 400 billion. It likely contains a similar number of planets. ...
The structure and evolution of the spiral arms of our Milky Way are basic but long-standing questions in astronomy. In particular, the lifetime of spiral arms is still a puzzle and has not been well constrained from observations. In this work, we aim to
The Milky Way's million degree gaseous halo contains a considerable amount ofmass that, depending on its structural properties, can be a significant masscomponent. In order to analyze the structure of the Galactic halo, we useXMM-Newton Reflection Grating Spectrometer archival data and measure OVII...
“Over its lifetime, Gaia is going to radically impact our understanding of the structure of the Milky Way and its evolutionary history,” says Monica Valluri, an astronomer at the University of Michigan in Ann Arbor. Where is the Milky Way's dark matter? The details of star trajectories ...
LAMOST survey provides 10 more million stellar spectra, substantially pushes our knowledge of the Milky Way forward. In this article, we briefly review the substantial progress on several fields, including the structure and evolution of the stellar halo, the structure and non-equilibrium kinematics ...