ASTRO 001 Study Guide - Final Guide: Electron Degeneracy Pressure, Sn 1987A, Degenerate Matter
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2. which element has the lowest mass per nuclear particle and therefore cannot release energy by either fusion or fission: oxygen, uranium c. iron, hydrogen, silicon. 5. why is supernova 1987a particularly important to astronomers? a. b. c. d. e. It provided the first evidence that neutron stars really exist. It was the nearest supernova detected in nearly 400 years. It provided the first evidence that supernovae really occur. It was the first supernova detected in nearly 400 years. It occurred only a few dozen lightyears from earth. 6. a teaspoonful of white dwarf material on earth would weigh: about the same as earth, about the same as mt. Everest: a few tons. d. the same as a teaspoonful of earthlike material, a few million tons. 7. which of the following is closest in mass to a white dwarf: earth, jupiter, neptune d. e. the sun the moon.