That’s still very much the case. All planets are, by definition, in our solar system. Any planet-like bodies not in our solar system are called exo-planets.
That’s still very much the case. All planets are, by definition, in our solar system. Any planet-like bodies not in our solar system are called exo-planets.
2km is a measure of distance not speed…
Sure, how about this https://www.dictionary.com/e/exoplanets-and-planets-the-truth-is-out-there/