首页
登录
职称英语
[originaltext] Astronomers have discovered a potentially habitable planet of
[originaltext] Astronomers have discovered a potentially habitable planet of
游客
2023-08-26
48
管理
问题
Astronomers have discovered a potentially habitable planet of similar size to Earth in orbit around a nearby star. A team of planet hunters spotted the alien world circling a red dwarf star called Gliese 581, 20 light years away. The planet is in the "Goldilocks zone" of space around a star where surface temperatures are neither too hot nor too cold for liquid water to form. If confirmed, the planet would be the most Earth-like that has ever been discovered in another solar system and the first strong contender for a habitable one. More than 400 exoplanets have been discovered by astronomers, but most are gas giants, like Jupiter, that would be inhospitable to life as we know it. Astronomers used the Keck telescope in Hawaii to study the movement of Gliese 581 in exquisite detail and from their observations inferred the presence of a number of orbiting planets. The team report two new planets in the Astrophysical Journal, bringing the total number known to be circling the star to six. One of the planets, named Gliese 58lg, has a mass of three to four times that of Earth and takes 37 days to orbit the star. Astronomers believe it is a rocky planet with enough gravity to retain an atmosphere. Unlike the previously discovered planets, Gliese 58lg lies squarely in the region of space where life can thrive. One side of the planet is always facing the star, much as one side of the moon constantly faces Earth. The average temperature on the planet is estimated to be between -31 to -12℃, but the ground temperature would vary from blazing hot on the bright side and freezing on the dark side.
Questions 22 to 25 are based on the passage you have just heard.
22. What can we learn about Gliese 581?
23. How many planets are circling Gliese 581 so far as we know?
24. What do astronomers think of the planet Gliese 581g?
25. In what aspect does Gliese 581g resemble the moon?
选项
A、It is three times bigger than Earth in size.
B、It is 20 light years away from Earth.
C、Its temperature is between 10 to 20℃.
D、There may exist some living things.
答案
B
解析
选项中的It,bigger than Earth和20 light years away表明,It可能指代某一星球,本题考查该星球的相关情况。短文中提到,一个探索星球的团队发现了一个围绕红矮星运动的行星,起名为Gliese 581,距离地球20光年,故答案为B)。light year意为“光年”。
转载请注明原文地址:https://tihaiku.com/zcyy/2958649.html
相关试题推荐
[originaltext]Onesourceofapoorself-conceptisaninaccurateself-perce
[originaltext]Onesourceofapoorself-conceptisaninaccurateself-perce
[originaltext]Onesourceofapoorself-conceptisaninaccurateself-perce
[originaltext]Trolleysrallyingdownaisles,endlesscheckoutqueues,andf
[originaltext]W:Roger,anyproblemsinyourKoreanstudy?M:Thebiggestprobl
[originaltext]W:Roger,anyproblemsinyourKoreanstudy?M:Thebiggestprobl
[originaltext]W:Roger,anyproblemsinyourKoreanstudy?M:Thebiggestprobl
[originaltext]W:OurPresident,sinceleavingofficefiveyearsago,hasspent
[originaltext]W:OurPresident,sinceleavingofficefiveyearsago,hasspent
[originaltext]W:OurPresident,sinceleavingofficefiveyearsago,hasspent
随机试题
【B1】[br]【B6】[originaltext]Whydosomanypeoplelivetoahealthyolda
【B1】[br]【B19】A、statementB、strategyC、situationD、suggestionB语义衔接题。这句的意思是“除此之
在下列选项中,属于心理过程的是()A.意志 B.能力 C.气质 D.兴趣
局麻药毒性反应的临床表现中,不包括A.高热 B.口舌发麻 C.耳鸣 D.多
Passage2 Accordingtooneaccount,the
下列关于量化投资分析的说法中,正确的有( )。 Ⅰ.严格执行量化投资模型所给
共用题干 患者男,40岁。体重60kg,因食管癌进食困难1个月余,乏力,极度口
阻波器调谐元件损坏,无法正常工作定性为()(A)一般缺陷(B)严重
孔子是中国伟大的哲学家,对人的本性有着透彻的分析,对中国的历史发展产生过巨大的影
经过MRP处理器处理输入信息获得的输出信息主要是()。A:财务报表 B:调研报
最新回复
(
0
)