Early Earth lacked life’s essentials until a collision with Theia added them. This chance event made life possible. After the ...

Sara Novak is a science journalist and contributing writer for Discover Magazine, who covers new scientific research on the climate, mental health, and paleontology. View Full Profile. Earth formed ...

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.

The theory could have important implications for the search for life outside the solar system. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.