The number of stars in a galaxy can be in the ___. A. hundreds B. thousands C. millions D. billions 相关知识点: 试题来源: 解析 D。解析:一个星系中的恒星数量可以在数十亿,选项 D 正确。选项 A、B、C 数量太少不符合实际情况。反馈 收藏 ...
解析 A。本题考查比较级的用法。A 选项“more than”表示“超过”,符合题意,意思是星系中星星的数量超过我们能想象的。B 选项“the most”是最高级形式,后面需要加名词。C 选项“most”是最高级形式,通常需要加 the 并且后面要接名词。D 选项“many”是原级,不符合句子要表达的比较的意思。
The primary way astronomers estimate the number of stars in a galaxy is by determining the galaxy's mass. This can be done by analyzing the rotation of the galaxy and the spectrum of the light it emits. In general, galaxies move away from each other as a result of the expansion of the...
There are stars in the Galaxy. We can’t count them.A.billion of B.billions C.billions of D.billion
A Sandage,G Carlson 摘要: Photometry of the brightest resolved red and blue stars and of four of seven Cepheids found in the dwarf galaxy Sextans B is compared with similar data for Sextans A. The photometry is based on a magnitude sequence that extends to B = 23, V = 22. The ...
These stars vastly ___the other stars in a given galaxy. A manageable B measurable C acceptable D outnumber 相关知识点: 试题来源: 解析 句意为“在一个给定的星系中,这些恒星远远___其他恒星。”结合选项,A.可管理的,B.可测量的,C.可接受的,D.(在数量上)压倒,比…多;多于,带入语境,应该用...
百度试题 结果1 题目There are___ stars in the Galaxy. A. billion B. billion of C. billions of D. ten billions 相关知识点: 试题来源: 解析 C 反馈 收藏
GalaxyGreen Bank Equationcommunicative civilizationssolar type starsmultiple starsextraterrestrial life/ A9590 Other topics in astronomy and astrophysicsThe Green Bank Equation for the number of communicative civilizations, N, in our Galaxy is reconsidered in view of recent information on the multiplicity ...
The formation of galaxies by gradual hierarchical co-assembly of baryons and cold dark matter halos is a fundamental paradigm underpinning modern astrophysics1,2 and predicts a strong decline in the number of massive galaxies at early cosmic times3–5. E
This is the first instance in which astronomers have documented and collected data on stars that form in between galaxies. The galactic tail has formed because ESO 137-001 is on course towards a galaxy cluster and its speed has created a hot tail of star-forming gases....