The genius of Einstein's theory of relativity was the first evidence that black holes might exist, but scientists still do not know what really happens inside of one. Follow the researchers investigating the dark secrets of this mysterious phenomenon.
Einstein's theory of relativity is one of the pillars of modern science, but a mysterious force called dark energy may threaten his genius. As scientists investigate how it shapes the universe, their findings could cause Einstein's work to be reexamined.
New discoveries on alien planets reveal the most violent storms and strangest weather in the universe. On some planets, there might be rain of rubies and diamonds, and others could be Earth-like worlds of frozen wastelands and hellish infernos.