Life on Earth may exist thanks to an incredible stroke of luck — a chemical sweet spot that most planets miss during their formation but ours managed to hit. A new study shows that Earth formed under ...

The precipitation of salt out of sea ice created a feedback mechanism that might explain the formation of Snowball Earth, the most extreme climatic event in the history of our planet. The idea, ...

New research sheds light on the earliest days of the earth's formation and potentially calls into question some earlier assumptions in planetary science about the early years of rocky planets.

An international team of astronomers has discovered a distant planetary system that challenges long-standing theories of how planets form. Across our galaxy, astronomers routinely observe a ...

For decades, many scientists believed that most of the water in our planet came from space, transported by meteorites and comets during the first moments of ...