From Twitter https://twitter.com/drsekula:

RT @sciam: For first time, Einsteinâ^TMs relativity used to weigh a star https://www.scientificamerican.com/article/for-first-time-einsteins-relativity-used-to-weigh-a-star/?WT.mc_id=SA_TW_SPC_NEWS&sf86652721=1 https://twitter.com/sciam/status/873155254392680449/photo/1 https://chirp.cooleysekula.net/attachment/34081