Mercury is putting on a show for skywatchers in the evening sky after sunset. But how well do you know the planet Mercury? Here's some Mercury trivia to ponder while planet gazing.

Here's a look at our solar system, from the scorching surface of Venus to the home of the largest volcano.

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5 fast facts about Saturn Saturn is the farthest planet from Earth that is still visible with the naked eye in the night sky. The name "Saturn" comes from the Roman god of wealth and agriculture.

Read these 75 interesting and cool facts about Earth to learn more about our planet.