Rocky planets in the habitable zone could be relatively common in the galaxy.
We all knew we'll eventually find another habitable planet, but in the last few months, news about the chances of finding such planets pile up. We're just waiting for the inevitable! Planets with double suns are common too. Considering our solar system formation theory and the planet findings, I think it's safe to assume stars without planetary systems are rare, I think I read an astrophysicist saying something that implied this somewhere too. Well, most supergiants would have swallowed their systems though.
