To study the Sun’s core, the team examined an aspect of the oscillations visible at the Sun’s surface that reflects the time it takes for waves to travel through the center of the Sun.

The Sun is a bit more complicated. The heat in the Sun is caused by nuclear fusion of the hydrogen it contains, which happens because of the extreme pressure and temperature at its center, where ...

In their analysis, Sun and Song used a three-dimensional tomography technique to invert the anisotropy of the inner core. They parameterized the anisotropy of the inner core in both radial and ...

Now, the inner core is rotating more slowly than before the shift. There's no risk of a cataclysmic disaster of dead birds falling from the sky or skin-blistering sunburns in seconds, like in the ...

The Sun A hidden solar cycle is awakening, ... "The inner core doesn't come to a full stop," Hrvoje Tkalcic, a geophysicist at the Australian National University, told CNN.com.