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- Wed Dec 09, 2009 5:59 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: NGC 253: Dusty Island Universe (2009 Nov 21)
- Replies: 39
- Views: 4472
Re: Silver Dollar Galaxy NGC 253 (2009 Nov 21)
whats the story with the arms being made by gravity waves and not a spinning in motion?