Hello,
It looks like the label 'GoToBase', which is given the value "Go to base" in strings.xml, is used on buttons in two different situations.
To open the base UI. (e.g. unlockedresearches.lua)
To center the Geoscape on a newly detected alien base. (alienbase.lua)
Though I understand that "go to" is correct in both case in English, perhaps in other languages, the translation is uneasy. I'd suggest to have another label when an alien base is discovered, like we have 'ShowCity' and 'ShowUFO' labels (e.g. "Centre on Base - Time = 5 secs").