第1个回答 2009-04-22
Hello everyone, today I'll tell you some things of the universe.
To the 18th century, in people's eyes, the universe, the solar system only. With the development of science and technology, it is recognized that: the earth is not the center of the solar system, the sun is the center of the solar system. And the sun is only tens of thousands of stars in the sky in one. So people began to mind the expansion of the universe to the galaxy.
In the Milky Way, there are many河外星系the existence of these河外星系far away from us, they also composed of tens of thousands of stars.At present, the most powerful Hubble Space Telescope has been able to observe the 15 billion light-years distant galaxies, the galaxies we see at least an hour on the speed of thousands of meters away from us, farther away from our galaxy, leaving us the faster the galaxy between the same is true, this illustrates that we are still in high-speed expansion of the universe. You may not know that we at all times through the space-time in.
You may not know that we at all times through the space-time in.We saw the sun is eight minutes before the sun, we see the stars at night, some on the issue of light millions of years ago, some million years ago on the issue of light, and even some billion years ago on the light, we have large-scale astronomical telescope to see the nebula, or even billions of years ago astrology. Therefore, we see some of the beautiful night sky of stars, in fact, the demise of the universe already. It is inconceivable how. Perhaps at this moment, you are studying hard, you are a busy business, is to worry about promotion, or are considering where to go on vacation ... ... At this moment, you are in the vast universe Space ... ...
第2个回答 2009-04-23
Hello everyone, today I'll tell you some things of the space.
To the 18th century, in people's eyes, the universe, the solar system only. With the development of science and technology, it is recognized that: the earth is not the center of the solar system, the sun is the center of the solar system. And the sun is only tens of thousands of stars in the sky in one. So people began to mind the expansion of the universe to the galaxy.
Milky Way about 100,000 light years in diameter, the sun rotating around the galactic center to be 2 billion a week.
In the Milky Way, there are many河外星系the existence of these河外星系far away from us, they also composed of tens of thousands of stars. At present, the most powerful Hubble Space Telescope has been able to observe the 15 billion light-years distant galaxies.
Galaxies we see at least an hour on the speed of thousands of meters away from us, farther away from our galaxy, leaving us the faster the galaxy is also the case between, this illustrates that our universe is still In the fast-growing.
You may not know that we at all times through the space-time in. We saw the sun is eight minutes before the sun, we see the stars at night, some on the issue of light millions of years ago, some million years ago on the issue of light, and even some billion years ago on the light, we have large-scale astronomical telescope to see the nebula, or even billions of years ago astrology. Therefore, we see some of the beautiful night sky of stars, in fact, the demise of the universe already. It is incredible how much things!
Perhaps at this moment, you are studying hard, you are a busy business, is to worry about promotion, or are considering where to go on vacation ... ... At this moment, you are in the vast space of the universe ... ...