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There should also be a link to hubble volume here... — Preceding unsigned comment added by 128.95.99.222 (talk) 21:16, 8 September 2008 (UTC)[reply]
I've added a "See also" entry for Hubble sphere. I'm not sure how likely this is to be confused, but a sphere is kind of like a bubble, so I see where you're coming from. – Uanfala (talk) 02:12, 30 January 2019 (UTC)[reply]
