The early solar system may have been far more chaotic than we ever imagined. A new study published in Icarus suggests that ...

A pair of theoretical physicists are reporting that the same observations inspiring the hunt for a ninth planet might instead be evidence within the solar system of a modified law of gravity ...

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Evidence pointing toward the existence of an undiscovered ninth planet in the solar system may actually indicate our ideas of gravity are incorrect. Such is the conclusion of two scientists who ...

The idea that the solar system has a clear boundary is misleading. This video explains why there is no true “edge,” only overlapping regions shaped by gravity, solar influence, and interstellar space.