nasa In visible light, the core of the Perseus galaxy cluster looks completely different [640×640] via /r/spaceporn http://ift.tt/29G8Tx3
via Tumblr http://ift.tt/29F7OUC
nasa In visible light, the core of the Perseus galaxy cluster looks completely different [640×640] via /r/spaceporn http://ift.tt/29G8Tx3
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