> **1,000-light-year wide bubble **surrounding Earth is source of all **nearby**, young stars One would presume that stars, whether young or not, that form more than 1000 light years away would not be classified as "nearby". I get what they are trying to say in the article, it's probably a bit more complicated than they are presenting though. Basically that the shock waves from super novae are causing density fluctuations that can trigger the formation of new stars in gas/dust clouds. The headline is a bit tautological though.