The Milky Way andthe Andromeda Galaxy, our nearest spiral neighbor, are headed toward each other. In about five billion years, they may collide and merge. Eventually, our remote descendants could be living in a large elliptical galaxy. What Do Our Closest Galaxies Look Like? 20 related questio...
Many galaxies like ours don't have AGNs, which are powered by feeding supermassive black holes, but even those that do are not necessarily blasting out radiowaves or "radio loud." It is only these AGNs that are defined as radio galaxies. What fuels "radio loud" active galactic nuclei?
The nearest spiral galaxy to ours, the Andromeda galaxy, is 2.5 million light-years away. Some of the most distant galaxies we can see are billions of light-years from us. The galaxy GN-z11 is thought to be the farthest detectable galaxy from Earth at 13.4 billion light-years away. ...
Once the accretion disk is used up, it becomes passive. Quasars tend to be at the centres of galaxies far, far away. All the Quasars we can see, albeit with the aid of a telescope, are billions of light-years away, leading scientists to believe that they are young galaxies. If we ...
Our nearest neighbour galaxy is more than 9000,000 light-years away from the earth. Man has known that ___. A.the Milky Way is the only galaxy B.other galaxies are near ours C.the sun is a large star in the Milky Way D.the earth is a small part of the universe 点击查看答案 ...
The solar system is the collection of objects that orbit around the sun. The solar system has been extensively studied by human beings using instruments such as telescopes and robotic probes.Answer and Explanation: An extrasolar planetary system is a collection of planets that are orbiting around ...
One theory suggests that more matter than antimatter was created in the beginning of the universe, so that even after mutual annihilation, there was enough matter left to form stars,galaxiesand, eventually, everything onEarth. The discrepancy would have been very tiny. Less than 1 in 1 billion...
I wonder if there are other solar systems similar enough to ours that have the right conditions for life. I have seen a number of shows that try to postulate on what alien life forms would look like, and whether they are as advanced as life on earth, or even more so. With the billio...
(galaxies are big, bright things – thinkMilky Waywith its one hundred thousand million stars – Oh no, perhaps don’t) the light from that explosion has been travelling that distance – most of the way to the Moon – every second for all of that time. And although the article tells ...
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