A new study suggests Earth formed primarily from material in the inner Solar System, challenging theories about the origin of its water and other volatile substances.
NASA-funded studies suggest the Sun's past activity and its galactic journey influenced Earth's ancient climate, from ice ages to early planetary warmth.
A new study suggests Jupiter's strong magnetic field protected its large moons during formation, while Saturn's weaker field led to only one dominant moon, Titan.
A new Kuiper Belt object, 2023 KQ14, has a stable orbit that challenges the theory of a hidden ninth planet influencing the outer Solar System.