1·They turned their telescopes toward other nearby galaxies.
他们把望远镜转向附近的其他星系。
—— 《柯林斯英汉双解大词典》
2·This has led scientists to speculate on the existence of other galaxies.
这就使得科学家推测还有其他星系存在。
—— 《牛津词典》
3·Only galaxies with a spherical bulge—like component appear to accommodate supermassive black holes.
只有拥有球形膨胀物质的星系才可能容纳超大质量的黑洞。
4·Our galaxy is so huge that dozens of lesser galaxies scamper about it, like moons orbiting a giant planet.
我们的银河系实在庞大，吸引着数十个较小的星系环绕着它奔跑，恰似环绕巨大行星旋转的卫星。
5·These galaxies may constitute an answer to the long-standing puzzle of the missing baryonic mass in the universe.
这些星系可能为宇宙中长期存在的缺少重子质量这一谜题提供了答案。
1·To explain this, they hypothesize that galaxies must contain a great deal of missing matter which cannot be detected.
为了解释这一点，他们假定银河系一定包含了大量无法探测到的不明物质。
—— 《柯林斯英汉双解大词典》
2·He says supermassive black holes at the center of galaxies could allow particles, and perhaps even planets with life, to orbit the singularity without being destroyed.
他认为，银河系中心的极大质量的黑洞中存在粒子，甚至可能存在具有生命的行星，围绕着奇点运转而不会被摧毁。
3·Take dark matter, the mysterious, invisible stuff that outweighs the visible stars and galaxies by a factor of 10 to 1. When it was first proposed in the 1930s, nobody believed it.
想象一下暗物质，那些神秘不可见的东东，在银河系里相对可见星的比重的为10：1，这种观点1930年被首次提出时，没有一个人相信。
4·By comparing photos taken at different times, scientists can subtract out objects that appear stationary, like far-off galaxies, and focus on things that appear to be moving in orbits, like asteroids.
通过对不同时期拍摄的图片的对比，科学家就可以推断出那些是恒定的遥远银河系，从而专注于研究按轨道运行的彗星。
5·Check out these photos of galaxies, planets and the discovery shuttle and many more.
看看这些拍摄银河系、行星以及探索者航天飞机的美妙照片吧！