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A. the moon at a shorter time than with our naked eye B. galaxies which began to form about 11 billion years ago C. the creation of the universe more than 13 billion years ago D. remote galaxies approaching us almost at the speed of light 相关知识点: 试题...
When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. A field of distant galaxies captured by the James Webb Space Telescope. (Image credit: NASA, ESA, CSA, and STScI) To the unaided human eye, the night sky is resplendent with over...
In most situations light helps us see. But when it comes to looking at the night sky light is actually a kind of pollution. It prevents our view of some of life’s most striking sights: stars planets and even galaxies.“When I was a little boy I loved the night sky. I remember look...
As we watch the system, we can see the stars blink off and on as they pass in front of each other. There's even one star that you can see with the naked eye do this, called Algol. This was known as “the ghoul” to ancient astronomers because of its creepy changing brightness ...
There are hundreds of stars that we can see with binoculars. These stars often change in brightness, and they are interesting to watch. And many star clusters(群) and galaxies can be seen. (1) According to the passage, the underlined "astronomy” is ___. A. a machine which tells you...
of the Milky- May than we are. Because of space dust we can't see it with the naked eye (肉眼). It's about 100 times the size of our Sun, and10,000,000 times as bright as the Sun~ The closest star to the Earth is the Sun! The Sun is about 93 million miles away. We meas...
Virgo cluster of galaxies in a large telescope [3] Note that these illustrations show what an experienced observer should see. Most of the deep sky objects are really faint and a beginner will have a hard time trying to see fine details or resolve the faintest objects. Also DSO will usually...
“What am I supposed to say? We’re still no further forward.” He took back the paddle and examined it again and then stood up and took it over to the window where he peered at the handle. “What?” I demanded irritably. “See here, Greg. In tiny letters on the handle.” ...
to get a refractor because all I lost was galaxies and a few smaller dso’s. The views of the galaxies didn’t hold my interest long you couldn’t really see anything and the smaller clusters weren’t such a big deal. I am happy to stick with refractors regardless of the limitations....