NeurothingBonus One!
There must be a special relationship between space and progressive rock/metal music. Maybe because prog is complex, quite all-embracing, and it favors so many diverse themes to be treated and thoroughly explored.
Cosmos leaves us so many open things to imagination. Although we know much more than before, there are still so many unknown things. Space and cosmos are utterly complex subjects.
In other words, perfect prog material.
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