Watch the constellations appear as you fill this mug up with hot water. See if you can spot some famous constellations right on your coffee mug. This is a delightful way to bring the starry night on your desk and in your kitchen. The mug is heat activated so when you pour in hot liquid, the constellations become visible and disappear as it cools down. It's like having your own nights sky in the palm of your hands. There are 11 constellations total that appear on the mug. Makes an excellent gift for someone who appreciates astronomy.
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