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 ...
Milky Way GalaxyGalactic centerCarina armH II regionsgravitational instabilitygaseous diskCygnus arm/ A9850L The Galaxy A9850E Galactic structure, content and morphology A9530S Relativity and gravitation in astrophysicsWe consider a possible scheme of the overall spiral structure of the Galaxy using ...
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 ...
We use data on space distribution of the currently most complete sample of Cepheids with reliable distances (565 stars), located within ~5 kpc from the Sun, to study the spiral pattern of the Milky Way galaxy. We estimate the pitch angle as 9°-10°; the most accurate estimate, i = ...
But the stars in the Bulge are a bit difficult to figure out. This photo looking toward the center of the Milky Way galaxy covers 0.5 by 0.25 degrees on the sky (an area about twice as wide as the full Moon) and contains over 180,000 stars. The image captur...
The Milky Way is, at least for now, the only galaxy that we can obtain the full 3 dimensional spatial and kinematical information of individual stars. This makes it the most important galaxy sample that we can study in details. In principle, better understanding on how the Milky Way ensemble...
Structure of the Galactic Bulge: Is the Milky Way a Double-barred Galaxy? Using the data of the IRSF/SIRIUS infrared survey along the Galactic plane ( l 鈮 10.5 at b = +1), we find a distinct structure, which is probably a secondary bar, inside the primary bar of our Galaxy. The ...
s NOIRLab — reveal that the stars in this stream were once part of an ancient globular star cluster that was torn apart by gravitational interactions with our galaxy. The Large Magellanic Cloud and Small Magellanic Cloud (satellite galaxies of the Milky Way) appear in the lower right. Credit...
This article uses a new space-time model to analyze the space-time distribution of the Milky Way. The new space-time model can better explain the three-layer structure of the Milky Way. These three-layer structures are the kernel, the bulge and the disc. The analysis results show that the...
It has been thought for many years that the Milky Way is an overly large spiral galaxy. Using Cephied distances to 17 spiral galaxies we calculate the true linear diameters of those galaxies. These diameters are then compared to that of the Milky Way which is found to be, at most, an ...