One of these exoplanets, HD 20794d, is likely to be a rocky planet in the habitable zone of its parent star, the G-dwarf HD 20794. This image shows the habitable zone around HD 20794 (green) and the trajectory of the three planets in the system. Image credit: Gabriel Pérez Díaz / SMM / IAC. “HD 20794, around which HD 20794d orbits, is not an ordinary star,” said UNIGE astronomer Xavier Dumusque. “Its luminosity and proximity makes it an ideal candidate for future telescopes whose mission will be to observe the atmospheres of exoplanets directly.” HD 20794 is a bright G6V...