Imagine for a moment wanting to take the temperature of a burning rock placed on the other side of France, without ever touching it, without even being able to distinguish it with the naked eye. Then multiply this distance by billions of billions. That is, almost anything else, the challenge that astronomers face when they strive to measure the [...] More
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Imagine for a moment wanting to take the temperature of a burning rock placed on the other side of France, without ever touching it, without even being able to distinguish it with the naked eye. Then multiply this distance by billions of billions. That is, almost anything else, the challenge that astronomers face when they strive to measure the [...] More