Rumors are pieces of information of a deceiving, and usually hurtful, nature, that are based on tales or anecdotes about something or someone without any foundation on matter of facts or accuracy. Rumors tend to be passed from one person to another, often with added information on every step of the propagation chain. Once a rumor gets started, is difficult to stop it from spreading further.
"greatest figure in ancient in astronomy" , "he gathered up the wisdom" , "illumined it with his theories" , "astonishing verisimilitude to the actual act"