Although several dozen minor galaxies lie closer to our Milky Way,the Andromeda galaxyis the closest large spiral galaxy to ours. Excluding the Large and Small Magellanic Clouds, visible from Earth's Southern Hemisphere, the Andromeda galaxy is the brightest external galaxy you can see. What is ...
there are lots ofstarsin the Milky Way that are older than the age of the fully assembled galaxy. Mergers still occur from time to time for both the Milky Way and M31. Both probably also have had their nuclei more active
galaxies: individual: Milky Wayquasars: generalDeposition of a massive (104105 M) giant molecular cloud (GMC) into the inner parsec of the Galaxy is widely believed to explain the origin of over a hundred unusually massive young stars born there 6 Myr ago. An unknown fraction of that gas ...
Our galaxy, the Milky Way, is shaped like a flat disk surrounding a central bulge. Whereas Population I stars are found mainly in the galactic disk, Population II stars mostly reside in the central bulge of the galaxy and in the halo surrounding this bulge.Population II stars date to the ...
Our galaxy, the Milky Way, is shaped like a flat disk surrounding a central bulge. Whereas Population I stars are found mainly in the galactic disk, Population II stars mostly reside in the central bulge of the galaxy and in the halo surrounding this bulge.Population II stars date to the ...
the brightest of which gained proper names. Astronomers have assembled star catalogues that identify the known stars and provide standardized stellar designations. However, most of the stars in the Universe, including all stars outside our galaxy, the Milky Way, are invisible to the naked eye fro...
trivia about this star: it was the location of an epic battle on the television series "Star Trek: The Next Generation," where the cyborg-human Borg race and the Federation fought for control of the galaxy. Most Trekkies know the name of this star and what it means to the Trekiverse....
(每小题1分,共10分)The sun is the closest star to the earth. It is at least 4. 5 billion years old. It is a 16 of the Milky Way Galaxy(银河系). The sunis important because it gives the 17 heat and light. It is about 150 million kilometres 18 the earth. On the sun's ...
We don't know much about the possible black holes scattered across in our galaxy — astronomers have only spotted a couple dozen of them to date. But the discovery of this black hole could provide insight into the locations of others hidden in the Milky Way. ...
[04:03.04]While dormant, they give off nothing and are difficult to identify. [04:09.12]The scientists said it remains unclear [04:13.68]how the black hole formed in our Milky Way galaxy. [04:18.12]Examinations of data ...