Kappa Cassiopeiae Space Gas Collision Star Constellation Postcard

as3 An incredible modern published collectors 5.5" x 3.5" postcard showing Kappa Cassiopeiae which is a star in the constellation Cassiopeia thathas an unusual spectrum that has anomalously weak nitrogen lines, taken as an actual nitrogen deficiency in the atmosphere.and this incredible souvenir describes the space gas and magnetic fields in the collision and has full details of the photo on reverse making this a specialist souvenir for any astronomy collector unused and mint