"Ryugu Asteroid Samples Suggest Messenger Comets as Source of Earth's Life"

Samples from asteroid Ryugu suggest that organic molecules, which may have given rise to life on Earth, were brought here by ancient comets. The space rock samples were collected by Japan's Hayabusa2 mission, revealing "melt splashes" created when cometary dust struck the asteroid's surface, containing small carbonaceous materials similar to primitive organic matter. The findings provide insight into the transportation of primordial organic material to Earth's vicinity over 4 billion years ago. This research is published in the journal Science Advances.