The discovery of nine new planets challenges the reigning theory of the formation of planets, according to new observations by astronomers, 2 of which for our own Dr Rachel Street and Dr Tim Lister .
Unlike the planets in our solar system, two of the newly discovered planets are orbiting in the opposite direction to the rotation of their host star. This upsets the primary theory of how planets are formed. The planets are called “exoplanets” because they are located outside of our solar system.
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