NASA @NASA
A black hole's pull of gravity is so strong, even light canβt get out! π³οΈ Interested to know more? Join our experts on @Reddit to ask us anything about one of the most mysterious objects in space. π: Thursday, Sept. 27 π: 2pm ET π: https://t.co/wZ8hIWGlHN https://t.co/4InUBNhFOn — PolitiTweet.org