The Turbulent Lives of Stars


The stars are boiling! The reason is the energy generated in the center of the star that wants to escape. If this does not happen quickly enough, the star starts to ‘boil’ in the outer layers causing vibrations that result in light variations, like in the Sun. Such oscillations have now been discovered by Victoria Antoci and collaborators using the NASA spacecraft Kepler, but in a much hotter star. The scientists publish this in the most recent issue of “Nature”.
Besides the discovery of earth-like planets, astronomy is concerned with research on stellar oscillations, among many other topics. The vibrations cause periodic brightness variations of some stars. Asteroseismology works just like the seismic exploration of the Earth’s interior: the frequencies of seismic waves depend on mass and composition of a body and therefore allow to tomographically reproduce its interior structure.

Full Story: http://medienportal.univie.ac.at/presse/aktuelle-pressemeldungen/detailansicht/artikel/the-turbulent-lives-of-stars/

  1. No comments yet.
  1. No trackbacks yet.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

%d bloggers like this: