Other big stars NASA's Hubble Space Telescope reveals the supercluster Westerlund 1, home of one of the largest known stars. Westerlund 1-26, a red supergiant, has a radius more than 1,500 times that of the sun.(Image credit: ESA/Hubble & NASA) UY Scuti's large radius does not make ...
The star that transforms into a red supergiant does so at a cost. It loses a large percentage of its mass out to space. As a result, while red supergiants are counted as the largest stars in the universe, they are not the most massive because they lose mass as they age, even as th...
1. 根据第一段的They are made of stars, gas and dust. They are also the home to a large number of planets可知,银河系是由行星、星星、气体和尘埃组成。 2. 根据第三段的Mark Reid is a space scientist who led an international team that studied the Milky Way可知,Mark Reid是研究银河系的。
There are ___ stars in the universe. A. many B. much C. a few D. a little 相关知识点: 试题来源: 解析 A。“stars”是可数名词复数,“many”修饰可数名词复数,表示许多;“much”修饰不可数名词;“a few”修饰可数名词复数,表示一些;“a little”修饰不可数名词。反馈...
The number of stars in the universe is ___. A. large B. small C. many D. unknown 相关知识点: 试题来源: 解析 D。宇宙中的星星数量是未知的,所以选 unknown。large 是大的,small 是小的,many 是许多,都不能准确描述宇宙中星星的数量。反馈 ...
Galaxies host some of the most massive in the universe. The top 10 most massive stars are also interesting objects of study.
billion 的用法是“基数词 + billion + 可数名词复数”表示有几十亿确切数字;或者“billions + of + 可数名词复数”意为“数以十亿计的”,数目不确切。根据此结构的用法可以排除C、D项;A项结构虽然正确,但是星星的数量是数不过来的,不能用一个确切的数字表达,故排除。 故正确答案为B。反馈...
Among all the stars in the universe, the sun looks much ___ than other stars from the earth. A. bigger B. big C. more bigger D. biggest 相关知识点: 试题来源: 解析 A。本题考查形容词比较级的用法。首先,句中有than这个比较级的标志词,所以要用比较级,big的比较级是bigger,而C选项more ...
In the universe, stars are incredibly large and powerful. They give off light and heat. Our sun is a star. It is the center of our solar system. The force of gravity keeps the planets in orbit around the sun. Without the sun's gravity, the planets would float away. The sun's energ...
In the universe,there is the sun,the moon,the earth and many stars.Through our geography lessons,we know the earth goes around the sun,and the moon goes around the earth.We have day and night because the earth keeps turning all the time.When our part of the earth turns to the sun,it...