A. It has a supermassive black hole at its center. B. It is a spiral - shaped galaxy. C. All the stars in it are of the same age. D. It contains dust and gas clouds. 相关知识点: 试题来源: 解析 C。解析:银河系是一个巨大的星系,它的中心有一个超大质量黑洞,它是螺旋状星系,并且包...
a跟你聊天累~~~不聊了! Chats tired ~~~ with you not to chat![translate] aThere are approximately 100 million stars in the Milky Way. Which expression represents this number of stars? 有大约100百万个星用银河。 哪个表示代表星的这个数字?[translate]...
Gravitational microlensing data suggest our galaxy may be awash with nomad planets, wandering in space far from host stars. Researchers at the Kavli Institute for Particle Astrophysics and Cosmology estimate there may be up to 100 000 such planets in the Milky Way alone and they may hold life....
we have learned a great deal since Drake first proposed his famous equation about the first four variables. Much of this is due to the recent spate of exoplanet discoveries, which have given astronomers a good idea of how many stars have planets, and how often...
Nomad planets in Milky Way may outnumber stars and carry life Gravitational microlensing data suggest our galaxy may be awash with nomad planets, wandering in space far from host stars. Researchers at the Kavli Instit... S Bowler - 《Astronomy & Geophysics》 被引量: 0发表: 2012年 Galaxy ...
Exoplanets (外行星): The Hunt Is OnToday scientists believe that planets could outnumber the stars. For centuries, scientists and natural philosophers have proposed that stars in the night sky have planetary systems similar to our own solar system. The existence of extrasolar planets, or exoplanets...
aThere are more than 200 billion stars in our galaxy,called the Milky Way,and our Sun is only one of them. 正在翻译,请等待... [translate] ainside reach 里面伸手可及的距离[translate] a孤独求败 Strives for the defeat lonely[translate] ...
aThere are more than 200 billion stars in our galaxy,called the Milky Way,and our Sun is only one of them. 正在翻译,请等待... [translate] achoose miner's mine from the build menu and build ti in the village 从修造菜单选择矿工的矿并且修造钛在村庄 [translate] a我信任你,但是这跟...
So far, only a small part of our galaxy, the Milky Way, has been explored. 2 Because exoplanets are so far away and very close to stars, it is very difficult to see them directly. 3 For example, as a planet circles a star, it pulls on it and causes it to shake. As the ...
An upcoming NASA mission could find that there are more rogue planets—planets that float in space without orbiting a sun—than there are stars in the Milky Way, a new study theorizes.