Planet for heavy metal fans? A Earth-sized globe made entirely of iron has been discovered.

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4 min readSep 28, 2023

This is one of the strangest planets we’ve learned about in recent years. It orbits remarkably close to its star and is ultra-dense. Scientists suspect it is composed entirely of iron.

[Image by pizar almaulidina from Pixabay]

In recent years, we’ve become accustomed to the idea that there are many exoplanets in space. We’ve also learned that they can…