NML Cygni or V1489 Cygni is a red hypergiant star[2] and the largest star currently known, at about 1,650 times the Sun's radius or 7.67 a.u. It is one of the extreme luminous supergiant stars.[3] Its distance from Earth is estimated to be around 1.6 kpc, or about 5,300 light-years.[3] This star has a dusty environment surrounding it
