ScienceSprings, 24 Apr 2019 https://sciencesprings.wordpress.com/2019/04/24/from-harvard-smithsonian-center-for-astrophysics-scientists-use-asteroid-to-measu…
ScienceSprings, 15 Apr 2019 https://sciencesprings.wordpress.com/2019/04/15/from-desy-asteroids-help-scientists-to-measure-the-diameters-of-far-away-stars…