A new exoplanet: Meet GJ 367b, an iron planet smaller and denser than Earth
As our solar system formed 4.6 billion years ago, small grains of dust and ice swirled around, left over from the formation of the Sun. Through time, they collided and stuck to each other. As they grew in size, gravity helped them clump together. One such rock grew into the Earth on which we live.
phys.org
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2021-12-03
