Which of these galaxies can be shaped as a single spiral arm?
2 answers:
The most common type of galaxy found throughout the universe is the spiral galaxy. Around 77% of the galaxies observed by man are spiral galaxies. A good example of this type is the Andromeda galaxy. Around two-thirds of all spiral galaxies have a bar-like structure – thus they are classified as barred spiral galaxies. The file attached shows how to figure out weather its a spiral galaxy or not.
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