Beyond the orbit of Neptune reside countless icy rocks known as trans-Neptunian objects (TNOs). One of the biggest, Pluto, is classified as a dwarf planet. The region also supplies us with comets such as famous Comet Halley. Most TNOs are small and receive little sunlight, making them faint and difficult to spot. This is an […]
[youtube=http://www.youtube.com/watch?v=l7AWnfFRc7g] Bestselling author, political adviser and social and ethical prophet Jeremy Rifkin investigates the evolution of empathy and the profound ways that it has shaped our development and our society.
GRO J1655-40: Evidence for a Spinning Black Hole Credit: April Hobart, CXC Explanation: In the center of a swirling whirlpool of hot gas is likely a beast that has never been seen directly: a black hole. Studies of the bright light emitted by the swirling gas frequently indicate not only that a black hole is […]