Wiktionary
blow sky high
vb. (context idiomatic English) To totally destroy and cause to explode
Usage examples of "blow sky high".
Such efforts are naturally stopgap, and will blow sky high given sufficient time and provocation.
One good jinxer on board and the whole mechanism could blow sky high.
Vote for Forrest, and things stay just the way they are now-till they blow sky high.
When the pressure builds high enough and this situation blows, it will blow sky high.