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Galaxies
Galaxies are large systems of stars and interstellar matter, and they contain billions of stars. Our own galaxy, the Milky Way, has 200 to 400 billion stars, and there are over one billion known galaxies. Questions that have to do with galaxies in general and specific galaxies are perfect for this category!
2,392 Questions
Every galaxy has billions of stars. Each of those stars is like the Sun, but some are larger or smaller, and they can have different colors.
What galaxies contain both largest and smallest galaxies in universe?
ummmm, galaxies can have galaxies in them unless they combine, also, we don't know, the universe is infinite and we have ye to see beyond our local galaxy cluster... sorry but that is an impossible question (although if the universe is infinite then nothing is quite impossible...)
How did the universe change after the big bang?
The big bang started over 100000000000000 milion years ago.The earth started off colder then russia, but now its riseing temps is dramaticly causing global warming
Can faint background galaxies be mistaken for stars?
Yes. Far-away galaxies can be mistaken for stars and occasionally are. This is due to the galaxies being millions upon millions of light years (the distance light can travel in a year) away from earth.
What do spiral galaxies have a nucleus of?
A spiral galaxy nucleus contains a mass of stars in a "bulge" and is thought that many contain supermassive black holes at the very core of the nucleus.
-In galaxies with tightly wound spiral arms the bulge generally contains old, red stars with low metal content (called population II stars); whereas galaxies with more loose arms generally have younger, blue stars (called population I stars). Some bulges have similarities to the elliptical galaxies and others are similar to disk galaxies.
-Evidence of supermassive black holes have been discovered in many galaxies and theorized to exist in many more galaxies (at least the larger ones). Our own Milky Way Galaxy contains a supermassive black hole at its core.
Are some irregular galaxies nearly 13 billion light-years from earth?
- Yes, they are usually of a similar size range to other types of galaxies, from a few thousand lightyears across to a million or more. Their formation is often as a result of two or more galaxies colliding, or coming close to each other.
This cluster of galaxies is made up of about twenty-five galaxies including the milky way?
The galaxy cluster that contains the Milky Way is called the Local Group.
What are the four main parts of a spiral galaxy?
The first part is a flat, rotating disk.
The second part is central, stellar bulge that is made of older stars and global clusters.
The third is a halo of stars.
And the last is the black hole in the center.
Hope this helps.
The word galaxy derives from the Greek term for our own galaxy, galaxias (γαλαξίας), or kyklos galaktikos, meaning "milky circle" for its appearance in the sky.
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That depends a lot on how you define "live". For example:
* When will it stop having a spiral shape,
* When will it have so few stars that it can no longer be considered a galaxy,
* When will the last star have died out.
Depending on the intended meaning, you get quite different answers.
The crab nebula has a diameter of about 11 light years. For comparison, the distance from the Sun to Neptune is only 0.000474385765 light years.
25,000 light years (4 times smaller than the Milky Way).
The spectra of most galaxies show redshifts this means that their spectral lines?
have wavelengths that are longer than normal
:)
Are galaxies moving closer together?
Because the origin was a explotion. therefore trusting evrything outward and the vacume of space cant slow it down.
There was NOT an explosion of matter into the "vacuum of space" at the start of our Universe. Rather, it was an expansion of space itself, taking matter "along for the ride." There is NO PLACE in our Universe from which matter exploding; rather, all points in space are expanding away from all other points.
Gravity is the most powerful binding force in nature. It holds together everything it can with varying forces.
Is an E7 galaxy a type of elliptical galaxy?
No, an EO galaxy is not a type of elliptical galaxy. They are a lenticular galaxy.
What keeps the stars in a galaxy from moving away from each other?
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What galaxy is after Andromeda?
All stars and constellations that we can see are in the Milky Way galaxy.
What is the name of your large galaxy nearest to your milky way?
Andromeda Galaxy is the nearest spiral galaxy to our Milky Way Galaxy. It is the largest galaxy of the Local Group, which also contains the Milky Way, the Triangulum Galaxy, and about 30 other smaller galaxies.
The NGC file is a netlist that contains both logical design data and constraints This file replaces both EDIF(*1) and NCF(*2) files.
*1: EDIF = Electronic Data Interchange Format. An industry standard file format for specifying a design netlist.
*2: NCF = Netlist Constraints File. This constraints file is commonly used to define constraints for schematic editors and third-party tools
What type of galaxy does earth belong to?
Our planet Earth belongs to Milky Way galaxy , witch is a spiral type galaxy .
If you lived in a elliptical galaxy how would the nighttime sky look different?
There is the potential that there would be a drastic difference in what we see at night. Since the rest of the galaxy is what we are viewing when we look at the star field, having an elliptical galaxy could create a 'void' of stars in certain section of the sky where the bands of the galaxy were no longer present (compared to the current system).
What type of galaxy is shaped like an egg?
An egg-shaped galaxy is called an elliptical galaxy. In the Hubble Sequence, they would be E3 or E5 Galaxies.
However, there is a galaxy called the "Fried Egg Galaxy" NGC 7742 which looks - not surprisingly, like a fried egg; however, it is a unbarred spiral galaxy.
What causes shadows to change length and location?
Shadows are cast by objects that block the path of sunlight. The length of the shadow can be measured by how much of the sunlight is being blocked from hitting the ground.
In the early morning and late night, when the sun is lower on the horizon, shadows appear to be longer because the line from the sun to the object to the ground is flatter, casting a longer shadow. Around noon, when the sun is almost directly overhead, there is almost no sunlight being blocked from hitting the ground, thus casting a very small shadow.
