Test 1 Duolingo Interactive Reading June 2, 2024 jomon Leave a comment Supernova Supernova Time left: 2:30 Fill in the Blanks: A supernova is a powerful and luminous explosion of a __________. A supernova occurs during the last evolutionary stages of a massive star, or when a white dwarf is triggered into runaway __________ fusion. The original object, called the progenitor, either collapses to a neutron star or __________ hole, or is completely destroyed to form a diffuse nebula. The peak optical luminosity of a supernova can be comparable to that of an entire __________ before fading over several weeks or months. select star planet moon asteroid comet galaxy select nuclear chemical biological gravitational thermal electromagnetic select black white brown red blue yellow select galaxy star planet moon asteroid comet