Could there be lone planets floating through space not orbiting anything?

Question by be quiet and drive far away: Could there be lone planets floating through space not orbiting anything?
Could one enter our solar system? Would Jupiter (and us) survive if an Earth size planet hit it?


Best answer:
Answer by Andrewyes, i think they say it as a theory. They are called "rouge" planets.

One can enter our solar system, but as to if they can hit us. I think that depends on gravitational pull

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東京では173年ぶりに観れる 金環日食。次回は300年後・・・ 気温の低下もリアルに感じました。 これがもし明日だったら、東京スカイツリーの開業と重なって もの凄いことになりそうでしたが・・・
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