APOD: The El Gordo Massive Galaxy Cluster (2014 Apr 22)

Comments and questions about the APOD on the main view screen.
moontrail
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Re: APOD: The El Gordo Massive Galaxy Cluster (2014 Apr 22)

Post by moontrail » Fri Apr 25, 2014 8:21 am

Chris Peterson wrote:
DavidLeodis wrote:With my very non-scientific mind I just cannot help wonder what effect (if any) a mass such as that of El Gordo has on the few billion light-years Universe that lie beyond it (from our perspective). As objects get ever nearer to the limit (is there one?) of the Universe then what happens at and after the limit may be way beyond mind-bogglingly awesome! What a let down therefore it will be if the Universe just ends abruptly (though probably still expanding at present) with nothing beyond!
There is no limit to the Universe, there is no edge. From the position of this galaxy cluster, the Universe appears substantially similar to what we see. Every observer appears to be at the center of a local observable universe 93 billion light years across, or 27.6 billion light travel years across. From the viewpoint of the cluster, we appear to have a redshift of 0.87.
Would it be the entire universe endless, but periodically repeating itself as in a circumference? circumference longitude: at least 14 trillion light years?
http://scienceblogs.com/startswithabang ... -universe/

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