Share to ClassroomStudy: Mercury Lost More Size
Mercury is the smallest planet. It is near the Sun. A new study says Mercury gets smaller. It lost more size than scientists thought.
The middle of Mercury is big and very hot. Now it slowly gets cooler. So the planet gets smaller. The planet gets lines, like a dry fruit. Scientists count these lines.
In November, a spaceship gets to Mercury. It comes from Europe and Japan. It can check the planet's size. The scientists are excited about the news.
