Doesn't SE Know The Difference Between Planets and Stars?

[NegativeS]

I'm pretty sure the reason is threefold:

1. It sounds cool.
2. It fits the 'old english' style of speak that the game goes for.
3. In Japanese, the kanji for 'planet' (惑星) contains the kanji for 'star' (星), so there's a tiny chance it could be a translation thing that they just went with because of the previous reasons.

Also fun fact relating to that last one, if you Google Translate 'planet' from English to Japanese, you get 星. That same kanji translated Japanese to English gives 'Star'. Thanks, Google!