https://www.explainxkcd.com/wiki/api.php?action=feedcontributions&feedformat=atom&user=2001%3A4091%3AA241%3A81DC%3AE857%3AF66B%3A684E%3AC4FDexplain xkcd - User contributions [en]2026-06-05T21:22:05ZUser contributionsMediaWiki 1.30.0https://www.explainxkcd.com/wiki/index.php?title=Talk:3255:_Planetary_Science&diff=414312Talk:3255: Planetary Science2026-06-05T18:25:19Z<p>2001:4091:A241:81DC:E857:F66B:684E:C4FD: </p>
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Hey I discovered sentient creatures on the planet! --[[User:Kirinhatchi|Kirinhatchi]] ([[User talk:Kirinhatchi|talk]]) 14:37, 5 June 2026 (UTC)<br />
: "Sentient" :D :D [[Special:Contributions/130.76.187.47|130.76.187.47]] 14:58, 5 June 2026 (UTC)<br />
:I used to think there was intelligent life. Then they elected Trump. [[User:Barmar|Barmar]] ([[User talk:Barmar|talk]]) 15:39, 5 June 2026 (UTC)<br />
Earth can be used as a test case for detectors of life. If your method is not detecting life on earth, then your detector produces too many false negatives. For instance the galileo space probe was tested with Earth during a fly-by, https://en.wikipedia.org/wiki/Galileo_project#Remote_detection_of_life_on_Earth. --[[Special:Contributions/2001:4091:A241:81DC:E857:F66B:684E:C4FD|2001:4091:A241:81DC:E857:F66B:684E:C4FD]] 18:25, 5 June 2026 (UTC)</div>2001:4091:A241:81DC:E857:F66B:684E:C4FD