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What Would You Need to Measure for a Planetary Nebula

Question 2

Multiple Choice

What would you need to measure for a planetary nebula (see the image below) to determine how long ago its parent star died? What would you need to measure for a planetary nebula (see the image below) to determine how long ago its parent star died? A) the mass of the white dwarf B) the mass and radius of the white dwarf C) the nebula's temperature and radius D) the nebula's radius and expansion velocity


A) the mass of the white dwarf
B) the mass and radius of the white dwarf
C) the nebula's temperature and radius
D) the nebula's radius and expansion velocity

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