Astroseismology Finds Smallest Planet Outside Solar System


Source: BBC

 

 

Amazing:

To spot the tiny, probably rocky planet, they first needed to precisely measure the size of its host star. They did so using “astroseismology” – effectively, turning tiny variations in the star’s light into sounds.

A report in Nature describes the blistering, probably rocky planet, which orbits its star in just 13 days.

It is joined in this far-flung solar system by two other planets, one three-quarters Earth’s size and one twice as large as Earth – all circling their star too closely to harbour liquid water or life.

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