Back in the early 1970s, I remember reading a book titled Black Holes: The End of the Universe by author John Taylor. It was my first introduction to those cosmological conundrums, and although at the time I had difficulty comprehending some of the terms the book offered (i.e. event horizon and singularity), the central concept that a star several times larger than our own Sun could theoretically collapse into an object so dense that its gravitation would be so powerful that even light couldn't escape - well that just blew my mind. Since then, much has been learned and theorized about black holes, to the point where it now seems every galaxy - even are own Milky Way - claims to have one at its center sucking up all the matter around it. Nonetheless, I still find them fascinating and you may, too. So, here are some videos that will help you better understand these bizarre bad boys of the universe.
The first two videos give nice illustrations of black holes physics. I particularly like the second by Professor Andrew Hamilton. It's his version of a Black Hole Flight Simulator. The last video was on the American Museum of Natural History's Facebook page today. It presents more of a "what if" scenario. Would it make for a good "B" movie plot? I don't think so.
Courtesy Public domain via WikimediaScientists at Princeton University and elsewhere spent the last couple years testing Albert Einstein's Theory of General Relativity and have come to the conclusion that the theory holds up just as well in the vast and distant regions of the universe as it does in our own solar system. First published in 1915, the landmark theory describes the very fabric of time and space, and gravity, and the way they interact with each other. It was further confirmed with experiments done during a total eclipse of the sun in 1919. The new research findings appear in the recent issue of Nature.
Princeton University story