BSL Astronomy Glossary - regulus - definition
Definition: Regulus is the brightest star in the constellation of Leo, the lion, and it is thought to represent the lion’s heart. It can be found in the night sky by using two stars in the Plough that make up the side of the blade closest to the handle, as shown in the video. By following a line downwards, through these two stars, it is possible to see a group of stars that look like a back-to-front question mark. These stars are in the constellation of Leo and represent the lion’s head and mane. Regulus is the bright star that marks the full stop at the bottom of the question mark. It is easier to imagine Regulus as the lion’s heart when the imaginary lines and artist’s impression are added to the video.