distances,however,billions of other galaxies are scattered.These galaxies are of many shapes and sizes.The Milky Way Galaxy is shaped like a spiral(螺旋型)disk.Other galaxies have been found to be shaped like spirals,too.In addition,still other galaxies are elliptical or irregular in shape. ...
15. Is Einstein's general theory of relativity correct? 15.爱因斯坦的广义相对论是正确的吗? 16. How are pulsars formed? 16.脉冲星是如何形成的? 17. Is our Milky Way Galaxy special? 17.我们的银河系特别吗? 18. What is the volume, composition, and significance of the deep biosphere? 18.深...
Our Galaxy, the Milky Way, is a disk of stars about 100,000 light-years across, and about 1,000 light-years thick. ... So, to leave our Galaxy, we would have to travelabout 500 light-years vertically, or about 25,000 light-years away from the galactic centre. What is inside a b...
What color is the Milky Way Galaxy? What do irregular galaxies look like? What distinguishes one type of spiral galaxy from another? What galaxy do we live in? What is the largest star cluster in our galaxy? What is the shape of the Magellanic Clouds?
As an analogy, consider the shape of our galaxy, theMilky Way. We can infer that it is a spiral based on maps of the stars in its spiral arms, but we cannot go outside the galaxy to see this spiral structure firsthand. However, withtelescopes, we can see other spiral galaxies from ...
What is the shape of the Milky Way Galaxy? What is the solar system mostly made of? What shape is the universe? How did the solar system form? What type of star does the Earth orbit around? What star is at the center of our solar system?
The Milky Way has three main parts: the core, the disk and the halo. The core isn't spherical; it's elongated into the shape of a bar anywhere from 5,000 to 20,000 light-years long. Up to a quarter of all the stars in the Milky Way reside in the core; the density of stars ...
Our Milky Way galaxy is a cannibal. It has grown by consuming other galaxies. Yet, it too, may be destined to collide and merge with an even bigger galaxy: Andromeda. Though galaxy collisions are normal events and NASA suspects this collision is inevitable (in billions of years), new ...
Galaxy Gravitationally bound stars, gas, dust, neutron stars, black holes, etc. Billions of stars in a galaxy and billions of galaxies in the universe Milky Way: 1,000 LY thick and 100,000 LY across! Active Galactic Nuclei (AGN) Normal Galaxies – one million to one trillion solar luminos...
【2】Which of the following is the main factor in categorizing galaxies? A.Shape.B.Size. C.Number of stars.D.Distance from the sun. 【3】Which of the following galaxies can be classified as irregular? A.Whale Galaxy — similar to the Milky Way both in size and shape. B.Cygnus A (...