in-demand ! Black Holes Explained

Brand fresh, and sealed. The fabulous Courses 2 DVD's.

Product Description
Imagine a region in space where the force of gravity is so sturdy that nothing—not even light—can escape. A region with physical conditions so extreme that they have not yet been reproduced in any terrestrial laboratory. A region so dense that an object as tiny as a walnut would have the same mass as our entire planet. This phenomenon—first theorized in the equations of Einstein and popularized in the stories of science-fiction authors—is a black hole: one of the remarkably exotic, mind-boggling, and profound subjects in astrophysics. Not only are they at the heart of some of the most intriguing phenomena in the cosmos, they’re the gateway to fundamental and cutting-edge concepts like general relativity and wormholes. Nearly everyone has heard of black holes, but few people outside of complex scientific fields understand their true nature and their implications for our universe. Black Holes Explained finally makes this aw