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HomeWorldAstronomers watch star clusters spewing out dust

Astronomers watch star clusters spewing out dust

Galaxies are often thought of as sparkling with stars, but they also contain gas and dust. Now, a team of astronomers has used new data to show that stars are responsible for producing dust on galactic scales, a finding consistent with long-standing theory. Dust is important because it is a key component of rocky planets such as Earth.

(via WSJ)