Songs in Easy English

• neutron star
￫ pulsar
20660#20665 SBLNGS CHLDRN 20665

• stellar classification
-- specroscopy, Henry Draper, Annie Jump Cannon, Hertzsprung-Russel, deplete, luminous, luminosity, Edward, mnemonic
20660#14595 SBLNGS CHLDRN 14595