Planet used to mean wandering star, referring to ‘stars’ that didn’t stay in one place but moved around with the days, months, years, or centuries. Obviously not a useful definition these days, I consider a planet a rocky body big enough that it’s gravity makes it almost perfectly round.
Planet used to mean wandering star, referring to ‘stars’ that didn’t stay in one place but moved around with the days, months, years, or centuries. Obviously not a useful definition these days, I consider a planet a rocky body big enough that it’s gravity makes it almost perfectly round.