Lucifer is the Planet Venus

The Planet Venus makes a pentacle/pentagram or 5 pointed star, when the Earth and Venus are at their closest points as they revolve around the sun:

venus-pentagram

In Latin, Venus ‘the light bearer/bringer’, was referred to as Lux Ferre (Lux = light/fire Ferre = to bear/to bring), or more commonly known as Lucifer.

In Revelation, Jesus referred to himself as the bright Morning Star (Rev 22:16).