Voyager 1 Probe Discovered The Whisper Of Interstellar Space
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Two spacecraft,(Voyager 1 and voyager 2) built and launched in 1970s, have for the past few years been beaming back our first glimpses from this strange region we call interstellar space. . No other spacecraft has traveled as far.In particular, this time it is the Voyager 1 probe that draws our attention, it discovered the whisper of interstellar space ( Cosmic Hum).
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Yes, you guessed it, we are once again talking about the probes Voyager 1 and Voyager 2, which in travel for 44 years now, have long since left the heliosphere, that sort of magnetic shell "inflated" by the solar wind that surrounds our planetary system up to distances of a hundred astronomical units; and from there they still find some energy to continue to transmit information about the hostile environment that surrounds them.
Launched in September 1977, the Voyager 1 spacecraft flew by Jupiter in 1979 and then Saturn in late 1980. Traveling at about 61,000 kph, Voyager 1 crossed the heliopause in August 2012.
After entering interstellar space, the spacecraft's Plasma Wave System detected perturbations in the gas. But, in between those eruptions - caused by our own roiling sun - researchers have uncovered a steady, persistent signature produced by the tenuous near-vacuum of space.
"The interstellar medium is like a quiet or gentle rain", said senior author James Cordes, the George Feldstein Professor of Astronomy. "In the case of a solar outburst, it's like detecting a lightning burst in a thunderstorm and then it's back to a gentle rain".
Although it's still sending data back to Earth, most of Voyager 1's instruments have now been powered down, and the craft is expected to go entirely end by 2025 at the latest; but its incredible journey isn't over. Now, its instruments have detected the constant drone of interstellar gas (plasma waves), according to Cornell University-led research published in Nature Astronomy.
After entering interstellar space, the spacecraft's Plasma Wave System detected perturbations in the gas. But, in between those eruptions - caused by our own roiling sun - researchers have uncovered a steady, persistent signature produced by the tenuous near-vacuum of space.
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