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Space: Voyager 1 detects plasma emissions outside our solar system

The Voyager 1 probe has detected plasma emissions outside our solar system. A discovery that could indicate the presence of another sun beyond the heliopause.

Launched in 1977, the probe Voyager 1 is not yet retired. Over 22.7 billion kilometers from Earth, the most distant human object on our planet has just made a new historical discovery. Outside of our solar system, space is probably not as empty as it seems, since it harbors constant emissions of plasma.

Lost in the heliopause (part of the universe out of reach of solar winds), the NASA flying object would indeed have indicated to scientists a constant hum at very low frequencies for a few years. As detailed in the journal Nature in a very complete article (in English), this vibration at 3 kHz would actually be proof of the presence of plasma emissions.

Suns not so far away?

If the plasma material is easily found on Earth and in our near space, it is more astonishing to find some in the middle of the heliopause, in an environment a priori out of reach of the solar corona ejections. If the quantities of plasma recorded by Voyager 1 are obviously much weaker than they were in intra-atmospheric space, this constant emission of matter which has persisted for three years is intriguing scientists: If our sun is not the source of these disturbances, where do they come from? The question remains unanswered for the moment, but Voyager could still surprise us. The probe still has a few years to go before it is deactivated. With a speed of 61,000 km / h, it still has a long way to go.

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