Match the word on the left with the definition on the
right.
____ black dwarf a. star left at the core of a planetary nebula
____ white dwarf b. a red supergiant star explodes
____ nebula c. a medium-mass star at the end of life
____ protostar d. a large cloud of gas or dust in space
____ supernova e.such a strong gravitational pull that no light escapes
____ neutron star f. the earliest stage of a star ’s life
____ black hole g. the remains of a high mass star
