Your question says 'in our solar system.' It might or might not be possible. It actually depends on whether the temperature of the planet, the atmosphere, availability of water & food & the things found there suit the needs of the organisms. As of now, no planet in our solar system or in the universe support the inhabitants of earth-like beings. But who knows? It's not entirely impossible either. Scientists say there were remains of water found in Mars which might prove the existence of extraterrestrials. Still, it has not been proved.
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RainbowSalt2222 ☔