A spacecraft picks up “strange noises” outside the solar system

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The researchers hope to use a drone to understand how the so-called “interstellar medium” interacts with the boundaries of the solar system, and how these boundaries, known as the heliosphere, are formed by the interstellar environment.


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Washington (cnn)

Voyager 1 spacecraft picks up a “hum” outside the solar system

The US spacecraft “Voyager 1” of the agency NASAWhich was released 44 years ago, strange humming sounds outside our solar system.

The devices on board the spacecraft were able to detect sounds that appear to be “the noise of the universe” outside our solar system, according to the network.CNN“.

And space scientists said that the sounds are emitted from so-called “interstellar gases” or plasma waves that exist in the largely empty space between stars.

“It’s very faint and monotonous because it’s in such a narrow band,” said Stella Koch-Acker, a PhD student at Cornell University in astronomy, who found the acoustic emission. “We are monitoring the faint and continuous buzzing of interstellar gas,” she added.

“Scientifically, this research is an amazing achievement. It is testament to the amazing Voyager spacecraft. ”

The results indicate more interstellar gases are occurring than scientists previously thought. Scientists are not sure about the low-level activity that would cause noise, but they suggest it might be the result of “thermally excited plasma oscillations.”

The researchers hope to use a drone to understand how the so-called “interstellar medium” interacts with the boundaries of the solar system, and how these boundaries, known as the heliosphere, are formed by the wider interstellar environment.

NASA’s Voyager 1 spacecraft flew near Jupiter in 1979, then flew near Saturn in 1980, before crossing the heliosphere in August 2012.

“The interstellar medium is like a gentle or calm rain,” said lead author James Cordes, a professor of astronomy. “In the event of a solar explosion, it is like discovering a lightning explosion in a thunderstorm and then returning to light rain,” he added.

Voyager 1 is the farthest human-made object ever launched towards the edge of the solar system as the spacecraft travels between the stars to discover the details of what the solar system narrates.

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