in Science The largest known black hole has a diameter of 1 trillion KM… by Web Desk October 2, 2016, 10:20 am 147 Views The largest known black hole has a diameter of 1 trillion KM, more than 190 times the distance from the Sun to Pluto. Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website By using this form you agree with the storage and handling of your data by this website. *