What are physical charachteristcs of a spiral galaxy?
A spiral galaxy, as its name implies, has one or more spiral arms that stretch out from the center. The center often contains a bulge of stars and sometimes can even contain an active black hole.
When should mailboxes be set in a cluster?
Mailboxes should be set in a cluster in larger neighborhoods. This makes it easier for the mailman to distribute mail to multiple people without dropping off packages on the front door.
What are spiral density waves responsible for?
They initiate new star formation. Therefore they are responsible for the formation of new stars.
How can astronomers name all the designations of the 100 billion galaxies in the universe?
Astronomers can name all the designations of the 100 billion galaxies in the universe using their mass, age, and metallicity.
A galaxy is a cluster of stars, nebulae, dark matter, and other astronomical objects. Most galaxies are tens of thousands of light years in diameter, and contain billions of stars. Galaxies come in three primary shapes; spiral galaxies are thin disks, with spiral arms surrounding a central hub; elliptical galaxies are uniform, oval-shaped agglomerations; and irregular galaxies have little or no definite structure.
A spiral galaxy centers around a hub, which is roughly spherical and bulges outward from the disk. The hub is the gravitational center of the galaxy, and usually contains a supermassive black hole. Surrounding the hub are spiral arms, which are bunched-up waves of stars and gas orbiting the center. The spiral arms usually have more gas and dust, and they contain most of the newly formed stars, which make them appear blue in color imagery. A spiral galaxy may have a horizontal bar passing through its hub; our own galaxy, the Milky Way, is believed to contain a bar.
What are boundaries of a galaxy?
A point where the center does not have gravitational pull... once things stop orbiting thats it for the galaxy
How far is the Magellanic Cloud from Earth?
The Large Magellanic Cloud is about 160,000 light years away.
The Small Magellanic Cloud is about 200,000 light years away.
What elliptical galaxy is about 2.9 million light years away in what constellaton?
It is the Andromeda
B.) A giant elliptical galaxy
How is the milky way and constellation centaurus different?
In essentially every possible way.
Constellations are specifically defined areas of sky; Centaurus is one such, as seen from the planet Earth. The Milky Way is a galaxy. The two are, at best, extremely loosely related.
Temperature was low enough for metals, and particles to form.
A foreground star, is a star that is observed when looking at further objects, that is not part of that object.
For example. If you were looking at a picture of a far galaxy, there might be stars "in the foreground" that are not part of that galaxy. These stars are called foreground star, because they are in the foreground.
According to The Institute of Pyramidology in London, they say that the pyramids of Egypt has predicted the World will end in the year of 2979 CE. If the prediction is wrong, then the world will probably end in another 5 million years, because many scientists say that if a white dwarf gos into the sun, it will explode an that will be the end of human civilization, the earth, or even the whole Galaxy will be wiped off into darkness...
Why does the sun give much light and heat?
because the sun is a star and stars contain gaseous properties,
search stars into wikipedia if your not totally convinced
lol
What supercluster do we live in?
The Local group for the cluster
The Virgo Super Clusters for the Supercluster
Is galaxy collision a possibility?
Yes. We have numerous telescope images of galaxies in various stages onf collision. It is belived that out own galaxy will collide with the Andromeda Galaxy in about 3 billion years.
Where are 90 percent of all stars located on the h-r diagram?
In a broad line on the left called the Main Sequence.
How far solar years Anderomeda is far from milkyway?
I think 2 light years. (1 light year=9.5 trillion km.)
What the difference between universe and galaxies?
A universe is a very big realm of darkness with galaxies in it. and there are billions of galaxies in the universe! One of those galaxies is our solar system, and in that solar system is our planet. There probably is even more then just one univserse. O_o Well... Galaxies are within the universe and a universe is defintly bigger then a galaxy