It's not really "seeing" them but the absopbtion of light in certain wavelengths that shows what's present in the exoplanet's atmosphere. There's a whole new br

It's not really "seeing" them but the absopbtion of light in certain wavelengths that shows what's present in the exoplanet's atmosphere. There's a whole new branch of sience looking for bio and techno signatures from exoplanets. Exciting times!