This is a trackable listed on geocaching.com (TB8697G). it is named for something that happened today (April 10,2019): A photo of a black hole was taken for the very first time! The namesake of this logbook is named after the area immediately surrounding a black hole where nothing, not even light, can escape.
To log a find on it, you will need to have met me usually at an event cache and signed the logbook.