Could We Actually Detect Life on Other Planets?

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There’s probably life somewhere besides Earth, but all the exoplanets are so far away we may never see their surfaces in detail or intercept a clear radio signal from them. How do we determine if a distant planet has life?

Host: Reid Reimers

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Sources:
https://www.space.com/24276-dyson-spheres-how-advanced-alien-civilizations-would-conquer-the-galaxy-infographic.html
https://earthsky.org/space/what-is-a-dyson-sphere
https://aasnova.org/2018/08/27/seti-on-the-side-seeking-dyson-spheres-with-gaia/
https://arxiv.org/abs/1103.5369
https://www.space.com/13514-alien-city-artificial-lights-extraterrestrial-planets.html
https://arxiv.org/abs/1608.06930
http://advances.sciencemag.org/content/4/1/eaao5747
https://iopscience.iop.org/article/10.1088/2041-8205/792/1/L7/meta
https://iopscience.iop.org/article/10.1088/2041-8205/792/1/L7/meta
https://news.nationalgeographic.com/2018/01/mystery-of--alien-megastructure--star-has-been-cracked/
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Images:
https://www.spacetelescope.org/videos/hubblecast97e/
https://www.videoblocks.com/video/9-in-1-4k-ultra-hd-pack-of-green-screen-ufo-flying-saucer-alien-spaceship-realistic-spacecraft-ruucgiyxliusisuh7
https://www.spacetelescope.org/videos/heic1705a/
https://www.videoblocks.com/video/3d-rendered-video-with-bacteria-b8fdzhkjjzj7rz7wf7
https://www.istockphoto.com/photo/alien-mega-structure-dyson-sphere-around-a-distant-star-in-front-of-the-milky-way-gm698572974-129417777
https://www.istockphoto.com/photo/a-swarm-of-asteroids-in-front-of-the-galaxy-gm914145772-251616949
https://commons.wikimedia.org/wiki/File:Red_fluorescent_representatives_of_five_different_reef_fish_families.jpeg
https://www.eurekalert.org/multimedia/pub/191961.php
https://commons.wikimedia.org/wiki/File:New_shot_of_Proxima_Centauri,_our_nearest_neighbour.jpg
https://www.videoblocks.com/video/cloud-timelapse-c4ws2uy
https://svs.gsfc.nasa.gov/20250https://commons.wikimedia.org/wiki/File:KIC_8462852_in_IR_and_UV.png
https://www.jpl.nasa.gov/spaceimages/details.php?id=pia20053
https://www.istockphoto.com/vector/set-of-monsters-isolated-on-white-background-gm921660984-253086924
https://www.istockphoto.com/vector/big-martian-panorama-gm945479754-258239099