Scientists said on Wednesday that the space probe Voyager -1 which was launched in 1977 to explore the outer planets entered a new area in the space on his way out of the solar system.
The scientists wrote in a paper published in the journal (Geophysical Research In Letters Geophysical Research Letters) and sent via e-mail to Reuters that the probe - which is now at 18 billion miles from Earth - monitoring you change evident in the environment in 25 of the last August.
And monitoring probe sudden changes in the levels of two types of rays, one remains within the solar system, while the other is coming from interstellar space.
Said Bill Weber world of space and professor at the University of New Mexico, who led the team of scientists that the number of particles in a bubble solar space called the heliosphere dropped to less than one percent of the levels observed in the past, while the radiation coming from outside the heliosphere to nearly doubled.
But scientists can not yet say that the probe is out of the solar system.
The probe may be - which was launched from Cape Canaveral Air Force Station, Florida, on the fifth of September 1977 - in the new area was not known in the past between the heliosphere and interstellar space.
The scientists said in December last Voyager arrived to what they called "rapid magnetic field" which overlap magnetic field lines coming from the sun with lines coming from interstellar space.
Said Edward Stone, one of the project scientists probe Voyager then, "We believe that this is the final step in our journey to interstellar space."
Stone said in a statement on Wednesday that there was a need for more evidence to show that Voyager left the solar system
