Talk:General Astronomy/The Big Picture

This article says "The contents inside this wall are called the Hubble volume, or the Observable Universe." But in this page, it says "the term is also frequently (but mistakenly) used as a synonym for the observable universe". I am not sure which concept does the article exactly refer to. Kevin-11-Xi (discuss • contribs) 09:07, 5 January 2015 (UTC)