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Mercury (planet) - Wikipedia
Mercury | Facts, Color, Size, & Symbol | Britannica
Mercury - NASA Science
Mercury Facts - Science@NASA
All About Mercury | NASA Space Place – NASA Science for Kids
Mercury: A complete guide to the closest planet to the sun - Space.com
Planet Mercury, explained - National Geographic
Mercury: Size, distance from the Sun, orbit | Astronomy.com
A Closer Look at Mercury’s Spin and Gravity Reveals the Planet ... - NASA
Mercury 101 | National Geographic - YouTube