4. Saturn
The sixth planet from the sun, Saturn is the most distant one that can be seen with the naked eye. It’s also the fifth brightest object visible from Earth!
Saturn is most famous for its many (30+) rings, which were discovered by Galileo Galilei in 1610.
source: NASA
The planet’s largest moon, Titan, is the only moon known to have an atmosphere. In fact, conditions on Titan may resemble ancient Earth conditions, albeit it much lower temperatures.
Fun fact: Saturn is the least dense planet. If you could find a body of water large enough to hold Saturn, the planet would float. (Earth and Mercury would sink the fastest.)
True color photo NASA
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