Astrophysicist Josep Trigo-Rodriguez of the Institute of Space Sciences near Barcelona, Spain, believes it is an interstellar ...

Earth system scientists developed the planetary boundaries framework for measuring and tracking the stability and resilience of the Earth system.1 The framework quantifies safe boundary levels for ...

This process, called accretion, is how everything in the solar system – planets, moons, comets and asteroids – came into being. Telescopes can see young solar systems being born.