![STARQUAKES](https://cdn.magzter.com/1493279487/1718115828/articles/XUYfslubm1719987384526/STARQUAKES.jpg)
The Sun may appear to be a stable and monolithic body sitting at the heart of the Solar System, but that isn’t the case. Our star is rocking with ‘starquakes’ that have become an area of intense study for solar physicists. Beneath the Sun’s surface is a roiling and violent sea of plasma that transfers energy from its core, where it’s generated by the nuclear fusion of hydrogen to helium, to the Sun’s surface, the photosphere, where it can be radiated out to rain sunlight down on Earth and the other planets. This process causes our star to shake, a phenomenon generally referred to as a starquake. Though only the surface of the Sun is visible to us, humanity has learned to deduce what lies beneath using these starquakes, just as seismic waves from earthquakes have been used to decode the interior of our planet. Now, this practice is being used to understand the interiors of more distant stars of all shapes, sizes and ages.
Though the name starquakes is reminiscent of earthquakes because stars are essentially superheated balls of gas, the causes of the two phenomena are very different. “I know it’s a good way of catching people’s attention to call them starquakes, and there are some analogies with earthquakes, but we generally talk about starquakes as the oscillations of stars,” University of Toulouse scientist Sébastien Deheuvels tells All About Space. “An earthquake is something that very locally pushes the Earth to oscillate, but what we see for a star is the whole star oscillating, not just a part of it. So perhaps the most common analogy that we make is with musical instruments – when you pluck a guitar string, the whole string of the guitar oscillates.”
هذه القصة مأخوذة من طبعة Issue 157 من All About Space UK.
ابدأ النسخة التجريبية المجانية من Magzter GOLD لمدة 7 أيام للوصول إلى آلاف القصص المتميزة المنسقة وأكثر من 9,000 مجلة وصحيفة.
بالفعل مشترك ? تسجيل الدخول
هذه القصة مأخوذة من طبعة Issue 157 من All About Space UK.
ابدأ النسخة التجريبية المجانية من Magzter GOLD لمدة 7 أيام للوصول إلى آلاف القصص المتميزة المنسقة وأكثر من 9,000 مجلة وصحيفة.
بالفعل مشترك? تسجيل الدخول
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LONG AGO, A LAKE ON MARS MAY HAVE BEEN SPRAWLING WITH MICROBES
Curiosity discovered manganese oxide in bedrock in a Martian region that may have been a shoreline billions of years ago
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MOON TOUR HELL
Finding this fascinating crater isnt as hard as its name suggests...
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THIS MONTH'S PLANETS
Most of the planets are tricky targets this month, but our guide will help you locate them
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UNIVERSE BEFORE TIME
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CLIMATE CHANGE IN THE SOLAR SYSTEM
Alongside Earth, our planetary neighbourhood is changing, but it’s not for the better…
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The Milky Way's halo is filled with ‘magnetic doughnuts' as wide as 100,000 light years
The outer halo of the Milky Way is filled with magnetic fields that take the shape of vast doughnuts with diameters ranging from 12,000 to 100,000 light years, with the heart of our galaxy at their centre.
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The Pentagon wants the commercial space reserve to support military satellites in orbit
The US Department of Defense is developing a plan to use the ever-growing American commercial space industry for national security purposes.
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DOES A COSMIC 'GLITCH' IN GRAVITY CHALLENGE ALBERT EINSTEIN'S GREATEST THEORY?
Gravity changes once you reach a cosmic scale
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DEEP SKY CHALLENGE : STELLAR TREASURES OF THE ARCHER AND SCORPION
Summer skies are stuffed full of amazing objects for your telescope - if you're prepared to stay up late