Mushrooms are plants in the culinary sense. Like strawberries, blackberries and raspberries are berries in the culinary sense.

“The gang is interned in a North Korean gulag”

I completely agree. It was used in To Sleep in a Sea of Stars by Christopher Paolini. I can’t think of many other works that use it.

Others have answered you question about non-directed nuclear blasts in space already. They don’t work the same way as in atmosphere; lack the blast or the thermal heat, etc. Enter the Casaba-Howitzer, a theoretical nuclear shaped charge that shoots a directed plasma stream at near light speed. This idea came about in the 60s along with nuclear blast propulsion.

The first Alien movie. It came on tv once and my dad was all into it. That took years to get over.