HTTP:: 039 Runaway Star 039 Mystery Puzzles Astronomers
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In 1988, Los Alamos National Laboratory (LANL) astrophysicist Jack Hills used the theory of gravity to calculate the existence of a peculiar class of stars, whose members traveled faster than the galactic escape velocity. His calculations were inferred from a theoretical model in which a binary star system passed very close to a black hole. The simulation showed that, while one of the stars was trapped in orbit, the other was thrown away at high velocities thorough the Universe. Astronomers had up to that point never observed such stars, but, after the theoretical model was ready, and they knew what they were looking for, they started spotting the runaway celestial bodies, traveling at incredibly large speeds. According to Hills' theory, these stars should move by at least 1,000 kilometers per second faster than the Milky Way's rest frame. Of all the stars classified as runaways, only HD 271791 allowed for most of its properties to be measured. It has about 11 times the ma!
ss of our own Sun, and it is also one of the first known stars to be on a path to escape the galaxy. Because experts were able to infer its proper motion, they were capable of establishing its trajectory. And this is where Hills' model came under attack. Rather than originating at the core of the Milky Way, such as the theoretical pr...
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