Scientists hope samples of asteroid Ryugu may reveal traces of the chemical ingredients that formed life on Earth.
It is a pretty spectacular achievement to not only rendezvous with an asteroid as it is whizzing around the Sun but also collect a sample. Here's what the researchers learned.
The source of water on Earth, the Moon and planets in our solar system is hotly debated. Some in the planetary science community argued that it came from asteroids and comets. Now they have proof.