About this video
Pluto has a hidden ocean under its icy surface that stays warm. Radioactive elements inside Pluto may keep it from freezing. Scientists love studying this faraway dwarf planet.
🧠 Quiz & Trivia
Test your knowledge after watching!
Q1 What is under Pluto's icy surface?
Answer: A warm ocean
Q2 What may keep Pluto's ocean warm?
Answer: Nuclear reactions or radioactive heat
Q3 Is Pluto a planet or a dwarf planet?
Answer: A dwarf planet
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