解析 D。“distance”表示距离,“long”表示“长的”,距离通常用“长”或“短”来描述,这里说地球和银河系的距离,应该是非常长的,“short”是“短的”,不符合实际。“far”表示“远”,“near”表示“近”,一般不直接修饰“distance”。反馈 收藏
Observed Cepheid γ velocities appear on average to be 3±1 km smore negative than the true corresponding center-of-mass velocities. The trend of increasing blueness toward larger Galactocentric radius confirms the radial metallicity gradient found spectroscopically....
Studies of luminous stars in nearby galaxies. I. Supergiants and O stars in the Milky Way. There is also evidence for a gradient in this ratio with distance from the galactic center, although the results are limited by the incompleteness of the... RM Humphreys - 《Astrophysical Journal ...
"It's clear that the Milky Way has a structure like those,but it's hard to tell being in it," said Mark Reid of the Harvard-SmithsonianCenter for Astrophysics. Now, a team of astronomers has taken an important steptoward mappingthe Milky Way by accurately measuring the distance to the ...
Two cities, a distance of at least Galaxy so long 翻译结果2复制译文编辑译文朗读译文返回顶部 Two city distances have the Milky Way to be so long at least 翻译结果3复制译文编辑译文朗读译文返回顶部 Distance of at least one of the two cities so long the milky way 翻译结果4复制译文编辑译文朗读...
In most cases suburban viewers see only galaxies' cores. The Milky Way's core, alas, is blocked from view by interstellar dust, else it too would be visible naked-eye even from the middle of major cities. As Redbetter says above, the center of M42 is a different story; it's truly ...
a授权中心 Authorized center [translate] a发展和改革委员会 Development and reform committee [translate] a地址:中国广东省广州市天河区禺东西路40号 Address: East Chinese Guangdong Province Guangzhou Milky Way area Yu west road 40 [translate] aafraid now 害怕现在 [translate] aafter she gets up 后在...
Runway distance markers, end-of-runway lights, overruns The quiz Astronomers use Cepheids as distance markers because the brighter the star, the slower it pulsates. Light shed on galaxy's far side: 'variable stars' could help map Milky Way's dark matter More results ► Dictionary browser ...
Milky way over the light from the city in the distance. The vast cosmos and reflections on the universe and our place in it.,站酷海洛,一站式正版视觉内容平台,站酷旗下品牌.授权内容包含正版商业图片、艺术插画、矢量、视频、音乐素材、字体等,已先后为阿里巴巴、
Accurate astronomical distance determination is crucial for all fields in astrophysics, from Galactic to cosmological scales. Despite, or perhaps because o