This is a fascinating read on searching for distant habitable planets. In theory the exoplanets atmospheres and stars have to have the right amount of U.V. coming from them, and red dwarfs seem to be the best stars where likely habitable exoplanets orbit to pinpoint them, according to the article. At least I think that’s what they’re saying here it’s in a layperson’s language but is still a little difficult to comprehend..
Keep in mind that they are talking about running a simulation of what we may find up there. Proof is there when they can build an instrument that can locate the biomarkers. Here is an article that is worded differently but is essentially the same as the one I posted above.