By what factor was the light from the star Earendel magnified by the cluster WHL0137-08?
Answer
At least 4,000 times
The star Earendel represents an extreme achievement in observational astronomy, requiring massive amplification to be seen by the Hubble Space Telescope. The text specifies that the star was viewed through the massive cluster WHL0137-08, and the gravity of this foreground cluster acted to magnify the starlight originating from Earendel. This magnification factor is stated explicitly to be substantial, reaching 'a factor of at least 4,000 times,' which was necessary to pull the light from an object that existed when the universe was only 7% of its current age into the detectable range of Hubble's instruments.
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