It's not a misnomer. "Dark" has multiple senses. In this case, it's "unknown, hidden, mysterious, secret". > The hemisphere has sometimes been called the "dark

It's not a misnomer. "Dark" has multiple senses. In this case, it's "unknown, hidden, mysterious, secret". > The hemisphere has sometimes been called the "dark side of the Moon", where "dark" means "unknown" instead of "lacking sunlight" https://en.wikipedia.org/wiki/Far_side_of_the_Moon https://en.wikipedia.org/wiki/Far_side_of_the_Moon More examples: - Dark matter - Dark continent - Dark knight - Dark web