Pore over your pour-over! This mug features beautiful original portraits of our solar system, and every time you enjoy a hot cup of coffee or cocoa, you can learn about each planet. As 19th century astronomer Maria Mitchell wrote, "You cannot study anything persistently for years without becoming learned..." Perfect for any hot beverage: coffee, tea, hot chocolate, pumpkin spiced beverage. • 12 oz. Ceramic coffee cup with a comfortable handle. • All of our disappearing mugs come in a beautifully designed, colorful box. • Heat activated color changing mugs are microwave safe, but not dishwasher safe. Hand wash only. Don't soak. • UPG is a novelty gift company specializing in smart and funny gifts. Check out our shop for all types of quirky fun stuff! Timeless Keepsakes~ Trendy Kitsch~ We Have It All