Europa is a moon which is known to have a subsurface liquid of water.
Venus can also be inhabited due to it being almost the same size as Earth, and having many common features with earth. Such as; Metal core in the interior of the planet, along with a rocky mantle. Its atmosphere is mainly made up of nitrogen and carbon dioxide. Although humans can't breathe in carbon dioxide, it is a similarity the planets have and I'm sure scientists can make an invention making carbon dioxide into oxygen.
Proxima B can also be inhabited in. It is a newly discovered planet and has many of the same features as Earth. It has water, leafy plants, and is close to a star so the temperature is not extremely hot; neither cold.
