MightyMeanie
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How does other galaxies differ from out own?
The discussion centers on the differences between other galaxies and our own Milky Way, exploring various aspects such as shape, size, star count, and interactions with other galaxies. Participants also consider methods for measuring galaxy sizes and the smallest known galaxies.
Participants express various viewpoints on the differences between galaxies, with no consensus on specific aspects or measurement methods. The discussion remains unresolved regarding the best approaches to measure galaxy sizes.
There are limitations related to the definitions of size and distance, as well as unresolved debates about measurement techniques.
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.misskitty said:Is there a way to measure how big or small a galaxy is compared to ours?