Letters that make spiral nebula
s, a, b, e, l, n, p, r, i, u are letters that make 'spiral nebula'
Words within spiral nebula
PI, nebula, IRA, la, IR, EB, Eb, pi, spiral, ira, neb, RA, AL, LA, NE, Ra, Al, Ir, La, Ne are words within 'spiral nebula'