AndronETalksNews
NPR
An iron-rich planet spotted in a nearby solar system could help scientists understand the mystery of how the planet Mercury formed in our own neighborhood.
The newly-described planet is about 31 light years away, according to a report in the journal Science. Astronomers haven’t seen it directly, but they’ve been able to estimate its size and mass by watching its effects on the star that it orbits. It appears that this planet is largely made of iron.
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