The biggest, most sophisticated Mars rover ever built blasted off Thursday as part of an ambitious, long-range project to bring the first Martian rock samples back to Earth to be analyzed for evidence of ancient life. 8:12 a.m.
Before now, scientists did not think it was possible for a stellar black hole to have a mass larger than 20 times that of our sun, but this newly discovered one is 70 times that or the sun. “Black holes are basically the most mysterious objects in the cosmos,’’ one scientist said. 12:44 p.m.
Hunger is growing, and the world is not on track to end extreme poverty by 2030 and meet other U.N. goals, mainly because progress is being undermined by the impact of climate change and increasing inequality, a U.N. report said Tuesday. 10:17 p.m.