Strangely silent star system seen
The graceful dance between three stars seen by the Kepler telescope has drawn the attention of astronomers because it is not accompanied by a song.
Most stars are known to generate great booming sounds in their interiors, and Kepler can spot the resulting change in the light that they emit.
However, astronomers reporting in Science say a red giant they have spotted is unexpectedly quiet.
HD181068A is orbited by two smaller, red dwarf stars that orbit each other.
The study of the sounds within stars is known as astroseismology, and a separate report in Science details the findings of more than 500 stars whose deep rumblings Kepler has measured.
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