It could resolve objects only 300 light-years in diameter — the nucleus of a small galaxy or a gas cloud on the way to collapsing into a star and planets, say —

It could resolve objects only 300 light-years in diameter — the nucleus of a small galaxy or a gas cloud on the way to collapsing into a star and planets, say — anywhere in the observable universe. The article opens talking about exoplanets rather than very distant galaxies. What does that kind of resolving power - which is deeply impressive - mean for looking at stuff in our immediate neighborhood?