The closest star that you can see with the naked eye in the Northern Hemisphere is Sirius, the Dog Star. Sirius, has twice the mass and is almost twice the size of the Sun, and it’s the brightest star in the sky. Located 8.6 light-years away in the constellation Canis Major – it...
The article reports that astronomer Eric Mamajek and colleagues discovered that the binary star system Scholz's star came within 0.8 light years of the sun around 70,000 years ago, passing close enough to come inside the Oort cloud, by measuring the stars' current speed and direction.Crockett...
1.earth的基本意思是“地球”,指相对于其他天体来说,为人类生存提供条件的星体; 还可指“大地,地面,陆地”,指相对于天空而言的为人类和其他生物提供居住地的地球表面.earth还可指“泥土,土壤”.earth引申可指“全人类”; earth用于比喻还可指“大量的钱.2.earth作“地球”解时常以单数形式出现,前加定冠词,也...
百度试题 结果1 题目( )33. Which star is the closest star to earth? A. The sun. B. The moon. C. Both 相关知识点: 试题来源: 解析 A 正确答案是 A,太阳。太阳是离地球最近的恒星,而月球是地球的卫星,并非恒星。反馈 收藏
We show that HD 98618 is the second-closest solar twin and that the fundamental parameters of both HD 98618 and 18 Sco are very similar (within a few percent) to the host star of our solar system, including the likelihood of hosting a terrestrial planet within their habitable zone. We ...
The stars in the Alpha Centauri system include a pair called “A” and “B,” which orbit (绕轨道而行) relatively close to each other. Alpha Centauri A is a near twin of our Sun in almost every way, including age. A...
阅读理解 (4.0) 分 In this passage the words “closest to our sun” means the star ___ . A. the earth we live on B. Alpha Centauri C. the Big Dipper D. the moon 相关知识点: 试题来源: 解析 B 、 Alpha Centauri 反馈 收藏
The sun is the___(close)star to Earth. 答案 closest根据题干可知太阳是离地球最近的恒星。故用close的最高级形式。故答案为closest。太阳是离地球最近的恒星。题目要求用所给词的适当形式填空,考查学生对语法知识的掌握及对词性转换能力.做题时,要根据题干中的相关提示来确定空缺处单词的词性及...
Hubble image of Proxima Centauri, the closest star to the Sun. ESA / Hubble & NASA The simple answer is that the Sun is the closest star to Earth, about 93 million miles away. But that might not answer your question. Outside of our Sun, our system's nearest neighbor is Alpha Centauri...
阅读理解The sun is the closest star to the earth. It is at least 4. 5 billion years old. It is a member of theMilky Way Galaxy. The sun is important because it gives the earth heat and daylight. It is 149 millionkilometers from the earth. On the sun's surface, we can see stron...