Astronomers discover unusual planetary system order

france24.com

Astronomers discovered a star with an "inside-out" planetary system, defying expectations of planet formation. The system, orbiting star LHS 1903, features a rocky planet followed by two gas giants, and then another rocky planet. This order is unusual as rocky planets typically form closer to stars. This discovery suggests planets may form individually in gas-depleted environments, challenging existing theories based on our Solar System's formation.


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