IBEX's experts also found that the unusual knot shiny strips of strong energy program, unveiled a year ago, now 'untied'.
These changes likely in the solar system fail to significantly higher levels of cosmic radiation that would otherwise prevent it in the development of life.
The collision of the solar wind with interstellar space creates an energy neutral hydrogen atoms, called ENA, the heliosphere, which fly in all directions into the interior of our system. Some of them go by andnext to the Earth where the IBEX recorded their number ,direction and energy. The spacecraft is slowly turning, and every six months creates a global map the outer parts of our system, and the new maps show that the structure of energy bands changed and that the intensity of ENA's dropped by 10 to 15 percent.
McComas still says that this decline is probably logical, because the Sun has only recently awakened from an unusually long period of very low activity in which the solar winds were extremely weak - reducing the number of particles that reach the edges of the heliosphere, the last few years has caused her jet, and decreased bladder leaks more cosmic rays.
Scientists hope the IBEX will continue to work throughout the solar cycle and collect data on the development of the heliosphere in the next few years when solar activity should be strengthened.
IBEX spacecraft launched in 2008. for monitoring the solar wind interaction with interstellar space.
'These results show that our position in the universe is stable, "commented Dick Fisher of the Heliophysics Division in NASA's Science Mission Directorate in Washington. 'Better understanding of the dynamic space environment is crucial for the planning of our future space exploration, "said Fisher.
IBEX This discovery is important for future interplanetary travel and scientific assessments on the possibility that some extrasolar planets, life exists.
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Sun protective bubble decreases quickly (part2)
utorak, 8. ožujka 2011.Objavio/la George Harford u 05:48 0 komentari
Oznake: extrasolar planets, heliosphere, ibex, solar bubble, solar system
Sun protective bubble decreases quickly
Heliosphere, the huge solar bubble that protects the Earth from lethal cosmic radiation, reducing the unexpected speed, new research has NASA spacecraft Interstellar Boundary Explorer (IBEX), which explores the interaction of solar particles with
dangerous radiation from space, he discovered that the edges of our systems more dynamic than previously thought.
The charged particles in the form of solar wind our star shines far beyond the orbit distant planets collide with matter in interstellar space and create a bubble of Earth, but also protects other bodies of cosmic radiation.
'IBEX-These data reveal that the models that we have used to describe the interaction of solar winds from the galaxy completely wrong, "said David McComas on Thursday, the head of NASA's programs, writes tportal.
First of all, so far it was assumed that the spread and reduce the heliosphere depends on the 11-year cycles of solar activity during which the number of charged particles the sun changes.
However, the IBEX-These data reveal that the heliosphere in the last six months decreased significantly more than was anticipated. This rapid deflation of the protective bubble could pose a major threat to the astronauts, because the balloon fails to significantly higher levels of radiation that could affect their immune system.
Objavio/la George Harford u 05:34 0 komentari
Oznake: david mccomas, heliosphere, ibex, nasa, solar bubble



