蜜芽传媒

NASA's mission to the asteroid Bennu aims to retrieve dust and rock samples. Yves Elsen, chairman of the Luxembourg Space Cluster, explains why one day we should prospect on space rock.

(Picture: A NASA artist's rendering shows the Origins Spectral Interpretation Resource Identification Security - Regolith Explorer (OSIRIS-REx) spacecraft contacting the asteroid Bennu. Credit: AP)