Regulus is a bright star located in the constellation of Leo. It is one of the brightest stars in the night sky and is often referred to as the "Heart of the Lion." Regulus is approximately 79 light-years away from Earth and is classified as a blue-white giant star, which means it is much larger and hotter than our Sun. This star is part of a multiple star system, consisting of four stars in total. Regulus itself is a binary star, meaning it has a companion star that orbits around it. The name "Regulus" comes from the Latin word for "little king," reflecting its prominence in the sky.