Simplify the following text for a Grade 9 native English-speaking person.
Original: It was discovered in 2005 by Mike Brown and the laser guide star adaptive optics team at the W. M. Keck Observatory , and carried the provisional designation of ' until officially named Dysnomia ( from the Ancient Greek word meaning `` lawlessness '' ) after the daughter of the Greek goddess Eris .
Simplified: The moon was named Dysnomia ( from the Ancient Greek word that means `` lawlessness '' ) after the daughter of the Greek goddess Eris .