论文部分内容阅读
太阳系有八大行星,我们所生活的地球就是其中的一颗行星。那么其他的恒星也有行星吗?A:我们熟悉的太阳只是银河系里普通的、中等大小的一颗恒星,而银河系里大约有2000亿颗恒星。恒星和行星系统的产生都具有类似的规律和法则,因此在广袤无垠的宇宙中一定还有其他类似太阳系这样含有行星、卫星和彗星的恒星系统。由于距离太远,我们无法直接观测到其他恒星的行星,但是科学家们找到了一些有关这些行星存在的间接证据。例如,科学家们发现,有一些恒星很容易偏离轨道,可能就是因为围绕着恒星旋转的行星产生
The solar system has eight planets, and the Earth we live in is one of them. So are the other stars also planets? A: The sun we are familiar with is just a regular, medium-sized star in the Milky Way, with about 200 billion stars in the Milky Way. Stellar and planetary systems are produced with similar laws and rules, so in the vast universe there must be other similar solar system such planets, satellites and comets star system. Because of the distance, we can not directly observe the planets of other stars, but scientists have found some indirect evidence of the existence of these planets. For example, scientists have found that some of the stars can easily deviate from orbit, probably because of planets that revolve around stars