Spinning Stars Slow Down With Age
The new information - including the spin-rate and mass of 30 stars examined - has been compared to what we already know about our own Sun, to help figure out their age. Similar to our Sun, stars spin at a slower rate and lose mass as they get older.
Knowing a star's age is relevant to the search for signs of habitable planets, like the Earth. Those planets will be the same age as the stars they orbit; and life is most likely to exist on planets that are not too old and not too young.