4 ms·
Judging by our primitive visits to Mars at best we could hope for some sort of wreckage or abandoned one-way technology. If we look at our visits to the ocean
by awb 5y ago
Judging by our primitive visits to Mars at best we could hope for some sort of wreckage or abandoned one-way technology.
If we look at our visits to the ocean depths, we only leave real time traces of our presence.
Assuming we aren’t the aliens and that aliens didn’t seed our planet with life, then if they did visit they didn’t find it compelling enough to stay for very long.
- maxden 5y agoSadly our presence in the ocean depths isn't as transient as we may wish, with pollution in the Mariana Trench. https://www.theguardian.com/environment/2018/dec/20/plastic-pollution-mariana-trench-deepest-point-ocean https://www.theguardian.com/environment/2018/dec/20/plastic-... Perhaps we will detect the traces of alien life by what they discard, which is what some suggested 'Oumuamua could be.