Word: schwarzschild
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Hoyle and Fowler are disputed by other scientists who maintain that gravitational collapse of such a very massive star would quickly result in a mind-boggling consequence: the Schwarzschild singularity. In 1916, German Astronomer Karl Schwarzschild used Einstein's equations to demonstrate that very massive bodies can literally gravitate themselves out of the observable universe. When such stars contract to a critical size during catastrophic collapse, Schwarzschild calculated, their gravity becomes so strong that it prevents any matter, or even radiation, from escaping into space. As a result, the stars simply disappear from view; they would be detectable only...
...seems too bad with all the emphasis being placed on "space sciences" that you did not include at least one true "space scientist," such as Astronomer Martin Schwarzschild of Princeton University, who through Project Stratoscope has come closer than any other man to placing a telescope in outer space...
...happened just as planned. Seven hours after launching, the observatory parachuted down, apparently undamaged, near Athens, Wisconsin, 150 miles away. A Navy truck guided by radio tracking, pounced on it promptly and brought the 35-mm. film back for developing. When the first pictures came from the darkroom, Dr. Schwarzschild pronounced them the best ever taken...
...Bubbles. Dr. Schwarzschild realizes that only an astronomer can appreciate the full beauty of his photographs. They are covered with roundish bright spots, each of which is a bubble of hot gas 200-500 miles in diameter that has worked its way up from the sun's interior like a thunderhead. The charm of the pictures, says Schwarzschild, is their unprecedented sharpness...
...first flight of Project Stratoscope, thinks Dr. Schwarzschild, was so successful that the same method may be used to take pictures of the planets. A larger balloon-borne telescope floating far above atmospheric turbulence might decide once and for all the romantic debate about life on Mars...