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The article focuses on evidence suggesting a super-Earth (Planet Nine) exists in the outer solar system. It states astronomers Konstantin Batygin and Michael Brown found evidence of a super-Earth after detecting an oddity in the orbits of six Kuiper belt objects. It mentions computer simulations suggest a super-Earth was ejected from the inner solar system by Jupiter. Batygin speculates that Planet Nine is the core of a giant planet which formed with the other planets.

The article looks at a study by researcher Jeremy Smallwood and other regarding the effect of super-Earth which simulated the formation of the inner solar system and found that one closer to the sun and increase the number of asteroid impacts on planet.

The article discusses how volunteer scientists used data from the Kepler spacecraft to identify light curves from stars and discovered four super-Earths orbiting a star in the constellation Aquarius.