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XI Boötis A system

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XI Boötis A was a UEG outer colony.[note 1]


Main article: Battle of XI Boötis A

On October 21, 2528, the system was invaded by the Covenant. Admiral Cole's fleet responded, defeating the Covenant fleet, but taking heavy casualties in the battle.[1]




  1. While never directly stated as an outer colony, the fact that it was attacked in 2528 (very close to the loss of Harvest and way before the 2536 date for the breach of the inner colonies), it can be assumed that it is an Outer colony.


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