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HYPERFAST star proven to be alien to our galaxy
Wash., D.C. A young star is speeding away from the Milky Way so fast that astronomers have been puzzled by where it came from; based on its young age it has traveled too far to have come from our galaxy. By analyzing its velocity, light intensity and for the first time its tell-tale elemental composition, astronomers have determined that it came from our neighboring galaxy, the Large Magellanic Cloud (LMC).
This star was discovered in 2005, and initially appeared to have came from the center of our galaxy. But that didn’t make sense because it would have taken 100 million years to get to its present location and HE 0437-5439 is only 35 million years old. To explain the enigma, the discoverers proposed the star was either a so-called blue straggler star resulting from the merger of two low-mass stars from the Milky Way, or that it originated from the Large Magellanic Cloud. The star is an early-type star and one of TEN so-called hypervelocity stars so far found speeding away from the Milky Way.
Stars in the LMC are known to have lower elemental abundances than most stars in our galaxy. It could therefore be determined if its chemistry was more like LMC or our galaxy. The star is nine times the mass of our Sun and about 35 million years old. It is zooming away from the Milky Way and Large Magellanic Cloud into intergalactic space at 1.6 million miles per hour (2.6 million km/hour). The concentration of elements in Large Magellanic Cloud stars are about half those in our Sun. Like evidence from a crime scene, the fingerprints point to an origin in the Large Magellanic Cloud. It was ruled out that the star came from the Milky Way.
Based on the speed of the star’s rotation measured by the discoverers, the astronomers believe that the star was originally part of a binary system. The binary could have passed close to a black hole 1,000 the mass of the Sun. As one star was pulled into the black hole, the other was whipped into frenzy and flung out of the galaxy. This is the first observational clue that a massive black hole exists somewhere in the LMC.
French physicist Leon Foucault used a similar method to Fizeau. He shone a light to a rotating mirror, then it bounced back to a remote fixed mirror and then back to the first rotating mirror. Because the first mirror was rotating, the light from the rotating mirror bounced back at an angle slightly different from the angle it initially hit the mirror. By measuring this angle, it was possible to measure the speed of the light. Foucault continually increased the accuracy of this method over 50 years. His final measurement in 1926 determined that light traveled at 299,796 Km/s. In 2008, according to the US National Bureau of Standards the speed of light is = 299792.4574 +/- 0.0011 km/s. According to the British National Physical Laboratory the speed of light = 299792.4590 +/- 0.0008 km/s
d) Scientist have shown the speed of light is NOT constant and have even frozen it (mad!!) so light could have been faster and then slowed down as it nears a galaxy/solar system etc
who is God as stated in the Bible?
so light is slow when gravity effects and through atmospheres?
not that constant really then? how much gravity would a stars light travel past to get here? also would/could it act like a sling shot also? david