3 ms·
Panspermia is such a plausible theory. We know that life spreads like crazy if you let it -- try to keep something sterile and life always finds a way in, even
by thehappypm 7y ago
Panspermia is such a plausible theory. We know that life spreads like crazy if you let it -- try to keep something sterile and life always finds a way in, even into our sealed jars and cans, volcanoes, the bottom of the ocean, etc. I wouldn't be surprised if one day we find that Mars is teeming with bacteria that hitched a ride on one of our rovers and adapted.
- pfdietz 7y agoAlmost certainly Mars would have been seeded billions of years ago, w. bacteria hitching rides on ejected debris from asteroid impacts, when conditions were much more hospitable there. And of course it could have gone in the other direction also. Even autopanspermia -- where ejecta from a planet-sterilizing megaimpact later comes back to the cooled off world -- is a possibility.