Saturday, December 18, 2010
When the spacecraft flew over the earth mysterious speed change (Figure).
<P> Keywords: American astronomer universe spacecraft navigation model </ P> <P> American astronomer recently, through research, confirmed the spacecraft flew over the Earth, the speed and direction change will mysterious phenomenon. .Reasons for this phenomenon occurs is unclear, but scientists said this implied the current navigation model, the universe may be missing something important, or there may be, our understanding of physics is also inadequate. .Research papers published in the March 7 "Physical Review Letters" (Physical Review Letters, PRL) on. .</ P> <P> solar sail spacecraft of this contradiction </ P> <P> the moon - alien spaceship </ P> <P> Mars spacecraft may be left of life microbial </ P> < .P align = center> </ P> <P align=center> the European Space Agency launched the Rosetta comet probe </ P> <P> led the study, the NASA Jet Propulsion Laboratory (JPL) of the .John Anderson. .The researchers analyzed 1990 to 2005 five different spacecraft flying through the six points (flybys) data, using the spacecraft's transponder on the machines and equipment on the ground to track the spacecraft beyond Earth's speed. .It was found that 5 of them over the point, when the spacecraft through the Earth's closest point, occurred faster than expected increase or decrease in amplitude in mm / seconds. .Anderson said that, relative to the spacecraft in km / seconds rate, this change is very small. .But this is completely over the measurement error range. .He said: "It is very small, but you clearly see from the data out." The study was not the first time, the spacecraft velocity anomalies observed after 10 and 11 for the Pioneer spacecraft (Pioneer 10 and 11) .The analysis also shows that they are flying out of the solar system occurred when the speed decreases. .The reasons for this phenomenon, scientists now think that should be attributed to factors not yet recognized the gravity, the other by some scientists think that human error caused by imperfect or models. .And Anderson himself that the results of previous research and the link between, he said: "I think they are associated, abnormal phenomenon does not occur so frequently." European Space Agency reported that world science and technology (ESA) Operations Center .engineer Trevor Morley believes that the orbits of spacecraft are subject to many factors, calculating speed of the spacecraft, the data to go through complex processing, so the spacecraft velocity change may be attributed to a deep in the dynamics or signal simulation .error. .Morley reported that their participation in world science and technology launched the Rosetta comet probe (Rosetta) also encountered this phenomenon, but he did not think it is a matter of urgency, he thought the speed of the spacecraft needs this change is not enough .for course correction. .Physicists are interested in his study this phenomenon in depth appreciation, he said: "Accordingly, the probability of new physics arising is extremely small, but can not say." </ P> </ p>.
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