解析 D。“distance”表示距离,“long”表示“长的”,距离通常用“长”或“短”来描述,这里说地球和银河系的距离,应该是非常长的,“short”是“短的”,不符合实际。“far”表示“远”,“near”表示“近”,一般不直接修饰“distance”。反馈 收藏
It is located within our galaxy, The Milky Way, but given its distance from our planet, Earth, it is simply too far away for any human or space probe to visit with current technology. Nothing indicates that Canis Major Dwarf Galaxy can't containalienlife forms orplanetsorbiting any of the...
Astrophysicists have been in a race to measure precisely how fast the Universe is expanding since Hubble announced that galaxies were systematically moving away from Milky Way Galaxy with a current speed in 1929. Hubble's observations came after Einstein's general relativity, which inspired the big...
Earth's Location in the Solar System from Chapter 11/ Lesson 2 34K Our solar system, galaxy, and universe can all be mapped, despite their vast complexity. Learn about Earth's location in the solar system, and explore details of how the Milky Way, galaxies, clusters, and even the 'cent...
Astronomers can provide detailed images of beautifullyswirling galaxies millions of miles away. It's our own galaxy they haven't beenable to get their arms around. "It's clear that the Milky Way has a structure like those,but it's hard to tell being in it," said Mark Reid of the Harv...
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As vast as the solar system is, it is tiny compared to its immediate and more distant surroundings. The solar system is part of the Milky Way Galaxy, a spiral-shaped agglomeration of stars and interstellar dust with four arms that orbit around the galaxy's own center. The solar system is...
The formula that I am using is from a StackExchange answer. I am assuming 3,261,633.44 Light Years to a Megaparsec. The diameter of Owl Nebula is 1.97 light years. To put this in context, the Milky Way Galaxy, the galaxy we currently reside in, is about 100,000 Light Years across. ...
Thanks to data collected by the Gaia spacecraft, we’re building a detailed 3D map of the Milky Way. There are between 100 and 400 billion stars in our galaxy alone, and clouds of dust and gas, like these nebulae, where new stars are born. Images sent from the Hubble Space telescope ...
Just trying to see the Milky Way overhead provides a good measure of how difficult it will be to see galaxies under the same skies. It stands to reason, since the average galaxy we are trying to see is of similar surface brightness to the Milky Way glow. The problem is that the bright...