Mystery as first known transiting exoplanet didn't form where we currently see it The planet Osiris, some 159 light-years from Earth, orbits so close to its parent star that its year lasts less than 4 of our days – now for the first time scientists have determined its chemical makeup The video will auto-play soon8Cancel Play now The Daily Star's FREE newsletter is spectacular! Sign up today for the best stories straight to your inboxInvalid EmailSomething went wrong, please try again later. Sign up today! When you subscribe we will use the information you provide to send you these newsletters. Your information will be used in accordance with ourPrivacy Notice.