Could an “Earth-like” planet be hiding in our outer solar system?

Among the many mysteries that reach far beyond our solar system, well, obscurely, is the extraordinary egg-shaped trajectory of a dwarf planet called 90377 Sedna.

Its orbit is 11,400 years old, which is one of the longest orbits ever Solar Systemleading the dwarf planet to 7 billion miles (11.3 billion km) from the sun, then escorting it out of the solar system and passing through the Kuiper Belt for 87 billion miles (140 billion km), finally taking it inside a loose envelope of icy bodies known as Oort cloud. Since Sedna’s discovery in 2003, astronomers have struggled to explain how such a world could have formed in a seemingly empty region of Earth. spaceAs it is very far from being affected by the giant planets in the solar system and even Milky Way Itself.

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