NASA Records Sounds Of The Sun

Posted: Jul 28 2018, 6:28am CDT | by , Updated: Jul 28 2018, 6:32am CDT , in Latest Science News


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NASA Records Sound of the Sun
Credit: NASA

These sounds allow researchers to study a range of complex motions inside the Sun, from solar flares to coronal mass ejections

The Sun is not silent. It continuously experiences fluctuations and generates sound waves.

These sound waves are actually triggered by solar activity like eruptions, coronal mass ejections and high-speed solar wind. Although they sound weird, they allow scientists to study a range of complex motions in sun’s interior.

NASA’s Solar and Heliospheric Observatory (SOHO) has observed the dynamic movement of the Sun’s atmosphere for over 20 years. Today, we can listen to this movement and understand how solar material flows, something otherwise impossible.

"The Sun is vibrating at lots of different frequencies,” said Alex Young from NASA’s Goddard Space Flight Center in Greenbelt. “We don’t have straightforward ways to look inside the Sun. We don’t have a microscope to zoom inside the Sun. So using a star or the Sun’s vibrations allows us to see inside of it.”

The solar sounds are generated using 40 days of data from the Solar and Heliospheric Observatory’s Michelson Doppler Imager (MDI).These observatories generated a staggering amount of data and it was needed to be processed, meaning that the data was transformed into an audible file so that anyone can hear it.

"We can see huge rivers of solar material flowing around. We are finally starting to understand the layers of the Sun and the complexity," said Young. "That simple sound is giving us a probe inside of a star. I think that's a pretty cool thing."

Launched in 1995, the Solar and Heliospheric Observatory is a joint mission between NASA and European Space Agency. The satellite is designed to study sun’s structure, its extensive outer atmosphere and the mechanism of the solar wind. The satellite is still operating and provides a nearly continuous record of solar activity over a full 22-year magnetic cycle.

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<a href="/latest_stories/all/all/47" rel="author">Hira Bashir</a>
The latest discoveries in science are the passion of Hira Bashir (). With years of experience, she is able to spot the most interesting new achievements of scientists around the world and cover them in easy to understand reporting.




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