Listen to the sound clip Mercury is the 2nd smallest planet. It's the sun. With the size of a basketball, mercury would be no bigger than a tip of a ballpoint pen. from Wanda - Magic School Bus Explores the Solar System - Character Voices (PC - Computer):
Mercury is the 2nd smallest planet. It's the sun. With the size of a basketball, mercury would be no bigger than a tip of a ballpoint pen.
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