Galaxies and the Universe
Type Ia supernovae are a class of stellar explosions that occur in binary systems where one star is a white dwarf. These supernovae are critical for measuring astronomical distances and understanding the expansion of the universe due to their consistent peak brightness. Their predictable luminosity allows astronomers to use them as 'standard candles' in cosmology, linking them to various concepts in cosmic distance measurements, dark energy, and the cosmological constant.
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