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GRBs: A New Standard Candle?

Astronomers might be on the brink of developing a new rung on the cosmic distance ladder.
Astronomy is a discipline pursued at unimaginable distances. And yet actually measuring the distance to a nearby exoplanet, or to a galaxy shining at us from the dark depths of the cosmos, seems almost futile.One of the simplest methods is to use standard candles — objects with a known intrinsic brightness — and infer their distances based on how bright they appear to be when seen from Earth.

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