The discovery of exoplanet K2-18b has sparked a debate among astronomers about its composition. Some scientists believe that it is a water world, with vast oceans covering its surface. Others argue that it is a lava planet, with molten rock dominating its landscape. With no direct evidence to confirm either theory, researchers are left grappling with the tantalizing mystery of what lies on this distant world. As technology continues to advance, scientists hope to gain more insights into K2-18b and unravel its enigmatic nature.

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source: Phys.org