How does other galaxies differ from out own?

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Galaxies differ significantly from one another in shape, size, star count, and their interactions with other galaxies. Measuring a galaxy's size compared to the Milky Way can be done using methods like Doppler shift for distance and angular size measurements. The smallest known galaxy is still a topic of debate among astronomers. These differences highlight the vast diversity of galaxies in the universe. Understanding these variations enhances our knowledge of cosmic structures.
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How does other galaxies differ from out own?
 
Astronomy news on Phys.org
shape, size, starcount, location, interaction with other galaxies
 
How does one telephone differ from another? One car from another? It's the same kind of thing, if I'm not mistaken.
 
They differ in almost every aspect possible.

BJ
 
Is there a way to measure how big or small a galaxy is compared to ours? What is the smallest galaxy we know of?
 
misskitty said:
Is there a way to measure how big or small a galaxy is compared to ours?
With the caveat that there is still a little debate about it, using doppler shift to find distance (there are other ways for closer galaxies) and measuring the angular size will give the actual size.
 

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