Complex sentence: One of the largest stars and also one of the most luminous of its type, it has a radius of approximately 1,420 ± 120 solar radii (equal to a diameter of 13.2 astronomical units, or about), and is situated about from Earth.
Split into simpler sentences: One of the largest stars and also one of the most luminous of its type. It has a radius of approximately 1,420 ± 120 solar radii (equal to a diameter of 13.2 astronomical units, or about), and is situated about from Earth.