What major realization resulted from accurately measuring distances using Type Ia supernovae data?
Answer
The expansion of the universe is accelerating
The meticulous measurement of cosmic distances provided by Type Ia supernovae, which act as reliable standard candles, was crucial in redefining our understanding of the universe's overall dynamics. When astronomers used these distance measurements to map the recession velocities of very distant galaxies, the data indicated that the rate at which the universe expands is not constant or slowing down due to gravity, but is instead increasing. This unexpected finding provided strong evidence for the existence of dark energy, characterized as a mysterious repulsive force that dominates the cosmos and drives this ongoing cosmic acceleration.
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