A planetary system 116 light-years from Earth has a peculiar pattern. It could flip the script on how planets form, scientists say.
Astronomers have found a compact solar system whose planets line up in a way that, according to current models, should not be possible. Around the small star LHS 1903, a dense rocky world orbits on ...
Astronomers have found a distant world that challenges planetary formation theory, with a rocky planet where gas giants should be.
Analysis of an ancient meteorite suggests that rocky planets both near and distant from the sun may have formed at the same ...
A newly studied solar system breaks the usual planet pattern, raising fresh questions about how rocky and gas planets form.