Mercury, Venus, Mars, Jupiter, and Saturn are all visible with the naked eye. The word "planet" means wanderer and they were named so because their position is constantly changing relative to other stars. I'm not concluding that they are whole other worlds, but what are they?
Mercury, Venus, Mars, Jupiter, and Saturn are all visible with the naked eye. The word "planet" means wanderer and they were named so because their position is constantly changing relative to other stars. I'm not concluding that they are whole other worlds, but what are they?