April 10, 2019 6:51 pm First-Ever Photo of a Black Hole Revealed Scientists have unveiled humanity’s first-ever photo of a black hole. US & World Videos 3:05 100 protesters detained at Northeastern University 2:39 Community mourns police sergeant killed on duty 2:50 Community mourns Billerica police sergeant killed on duty 4:32 Anti-war protester at Northeastern speaks amid arrests: ‘We are peaceful students' 10:42 Multiple people arrested as police clear campus encampments