This is the 2191st most frequent Chinese word.
星球
"星球" means "planet" or "celestial body."
In this sentence, '星球' refers to a celestial body, specifically a planet.
地球是我们的星球。
Earth is our planet.
Here, '星球' represents planets in general within the vast expanse of the universe.
宇宙中有无数的星球。
There are countless planets in the universe.
'星球' in this context points to newly discovered or explored celestial bodies, connecting to the search for life.