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A comment on James Webb telescope's coldest instrument reaches operating temperature. Parent comment

Re:James Webb telescope's coldest instrument reaches operati... by jandrese on Monday April 18, 2022 @01:22PM (#31073721)
At the very least alien telescopes can detect the change in composition of our atmosphere as a result of industrialization. We could do this using today's technology, so for any civilization with the ability to actually travel between solar systems it is childs play and they would easily have continuous monitoring of all nearby solar systems looking for abrupt changes in the atmosphere.
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Re:James Webb telescope's coldest instrument reaches operati... by pantalaimon on Monday April 18, 2022 @02:41PM (#31074759)
We would still need continuous monitoring of the planets for decades, right? Or can we already make that out in a single snapshot?
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Re:James Webb telescope's coldest instrument reaches operati... by jandrese on Monday April 18, 2022 @05:30PM (#31076851)
A single snapshot tells a lot (NASA already does this), but continuous monitoring would be almost free at that point so you would have to assume it is happening as well.
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