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5 votes
3 answers
202 views

Could you detect extrasolar intelligence using a non radio-telescope or other instrument?

The James Webb Space Telescope, after decades of development, has finally launched. It stands to reveal great knowledge about the dawn of the universe, and great insights into extrasolar planets. With ...
WasatchWind's user avatar
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22 votes
9 answers
7k views

Plausible reason not to notice a planet

Imagine a generation ship heading for a distant star. Humanity had means to observe that star up to a point, that it is 99.9% sure the star has a colonizable Earth-like planet (with water and ...
Maxim Zabolotskikh's user avatar