How do astronomers utilize supernovas to study the universe?
Answer
They use their brightness to map the expansion of the universe
Because supernovas are incredibly bright, they can be detected at distances spanning billions of light-years. This high luminosity makes them excellent beacons for cosmologists. By observing how these distant events appear to us, scientists can calculate distances to far-off galaxies and gather data on the expansion rate of the universe, providing insights that are impossible to obtain through local observations alone.
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