麻豆社

NASA has launched a mission to retrieve a rock sample from an asteroid called Bennu.
Scientists hope the material will reveal details about the formation of the planets.
Space journalist Leo Enright says it's hoped it could help answer one of the biggest questions of all.

(Picture - A NASA artist's impression of the OSIRIS-REx spacecraft which will travel to the near-Earth asteroid Bennu and bring a sample back to Earth. Credit - NASA/Reuters)