Earth Song: European Space Agency captures the "sound of our planet" and sings an eerie melody as solar storms destroy its magnetic field.
- The sun emits a constant stream of charged particles in the so-called solar wind.
- Explosive energy releases on the surface of the star can drive the wind into a storm.
- As these particles cross the Earth's magnetic field, magnetic waves are emitted.
- Experts have turned these waves into sounds, revealing how the wind makes a low note.  However, when solar storms arise, the melody and pitch rise and become complex.
The Earth Has Inspired Many Famous Melodies – by Michael Jackson's "Earth Song & # 39; 39; up to Björks & # 39; Earth Intruders – but now the Blue Planet has its own song.
Astronomers for the first time recorded the eerie "song" sung by the Earth's magnetic field when it was hit by a storm of charged particles from the sun.
The "Melody" is a sonic version of the stunning aurora light show that can be seen near the poles when charged particles interact with the earth's atmosphere.
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astronomers for the first time recorded the eerie "song" sung by the Earth's magnetic field when it was struck by a storm of charged particles sent down from the sun imaged by this artist. The "Melody" is a sound version of the stunning Aurora Light Show
WHAT ARE THE CLUSTER II SPACE VEHICLES?
Cluster II is the name given to four European Space Agency satellites flying in formation through the Earth's magnetosphere.
Launched in 2000, cluster probes have been analyzing Earth's huge magnetic field for nearly two decades.
Cluster II spacecrafts were built to replace the original cluster probes, which were destroyed during a failed launch.
They transformed the results into audible frequencies and produced an unusual sound that they called "the sound effects of a science-fiction movie rather than a natural phenomenon."
Th The psychedelic song was identified after the team had sent four spaceships through the so-called "shunting" region of Earth's magnetic field which faces the Sun and was influenced as the first part by incident sunrays .
Usually, the constant flow of charged particles that make up the solar wind causes the pushout to emit simple magnetic waves that, when converted to audio waves, sound like a single low musical note.
In a Solar Storm The impact on Earth, however, causes this "music" to rise – and become more complex – by the impact of the magnetic field's impetus on the pitch.
"It's as if the storm is changing the mood of the tremor," he said paper author and space physicist Lucile Turc of Helsinki University in Finland.
Data for the study were collected from the ESA's Cluster II mission, in which four identical spacecraft flying in formation were placed in the Earth's magnetosphere.
The probes were launched in 2000 and have analyzed the Earth's probes huge magnetic field now for nearly two decades.
The magnetic field acts as an invisible "bubble" and protects life on Earth from the stream of charged particles – especially electrons and protons – that are emitted continuously by the sun.
The four Cluster II spaceships are constantly orbiting the earth. Earth repeatedly flies through the pass.
At the beginning of their mission, from 2001 to 2005, the probes flew through six collisions between the tremor and a solar storm, recording the waves they created.
Normally, the constant flow of charged particles that make up the solar wind causes the pushout to emit simple magnetic waves that, when converted to audio waves, sound like a single low musical note (see picture on the left). , However, when a solar storm strikes the earth, this & # 39; music & # 39; louder by the impact on the front of the magnetic field – and is much more complex (see right).
The team used computer simulations to reveal the intricate wave patterns that arise during solar storms.
It's a fast process where the wave generated by the shake-off reaches the ground in about 10 minutes.
Researchers are now working to understand exactly how they are created. Complex waves are created.
"We have always expected a change in frequency – but not the complexity of the wave," Dr. Turc.
Solar storms are part of the space weather. As the solar wind blows, explosive energy releases near the surface of the sun create turbulence and gusts that eventually lead to solar storms.
The understanding of space weather is becoming increasingly important to society, as solar storms can have deleterious effects on sensitive electronics and technology on the ground and in space.
"This is an excellent example of how Cluster extends our knowledge of the Sun-Earth connection even years after receiving the original data," added author Philippe Escoubet of the European Space Research and Technology Center.
"The results introduce us to the details of fundamental magnetic interactions that take place throughout the universe."
The full results of the study are published in the journal Geophysical Research Letters.
HOW IS THE SOLAR WIND FORMED?
The sun and its atmosphere consist of plasma – a mixture of positive and negative ch Particles deposited at extremely high temperatures that carry magnetic field lines and travel along them.
Material from the corona empties into space and fills the solar system with the solar wind.
However, scientists discovered that things change when the plasma moves farther away from the sun.
The sun gradually loses its magnetic control and forms the boundary that defines the outer corona – the outermost edge of the sun.
The bursting of the rays resembles the way water shoots from a spray gun.
First, the water is a smooth and uniform stream, but eventually it breaks up into droplets, then smaller drops and finally a fine, misty mist.
A recent NASA study has captured plasma at the same stage as a stream of water gradually breaking up into droplets.
When charged particles from solar winds hit the earth's magnetic field, this can cause problems for satellite and communications equipment.