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The void of space does not allow the sound to travel between two objects in the same way as on Earth. The sound is a vibration emitted by an object, which travels in a medium such as air until it is heard by another object. Scientists have, however, been able to circumvent this limitation to conceive novels for interpreting the signals emitted by the cosmos. Astronomers at the University of Wisconsin-Madison, United States, have isolated a particular type of resonance caused by flashing stars.
These "vibrations" are fluctuations in temperature and brightness on the surface of a star.
Powerful telescopes can capture these vibrations and, through computer simulations, recreate the sound produced by the stars.
Jacqueline Goldstein, a student of astronomy in Wisconsin-Madison, said, "A cello looks like a cello because of its size and shape.
"Star vibrations also depend on their size and structure."
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But at incredible frequencies ranging from a few minutes to a few days, astronomers must accelerate the vibrations up to a million times so that the human ear can hear them.
As a result, stellar vibrations are called "stellar earthquakes" and the new field of study has been dubbed "astrosismology".
Astronomers hope this discovery will help better understand the composition and structure of stars.
When a star fuses hydrogen atoms into heavier elements such as helium, a hot plasma or a superheated gas causes the flicker of a star.
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Astronomers who observe these flickers carefully can deduce the structure of a star and its behavior over time.
Ms. Goldstein, who studies stars larger than our Sun, said, "These are the ones that explode and create black holes, neutron stars and all the heavy elements of the universe that form planets and, in big, new life.
"We want to understand how they work and their impact on the evolution of the universe. So these very big questions. "
But this is not the first time that astronomers recreate the sounds of the cosmos.
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In July 2018, NASA's Goddard Space Flight Center used data collected by the European Space Agency (ESA) to recreate the sound of the Sun.
The Solar and Heliospheric Observatory (SOHO) of NASA and ESA collected data over a 20-year period during which Sun movements were recorded.
The data was then translated into a strange and incredibly low purr.
Alex Young, NASA, said, "You actually hear the vibration of the sun. He has almost a heat to it.
"It's just enough where I can feel the sound on my skin or on my clothes. I imagine feeling the sun moving next to me. "
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