3 ms·
There was a paper recently that argued that the habitable zone is smaller than anticipated because either the concentration of carbon dioxide will be too high (
by Tepix 7y ago
There was a paper recently that argued that the habitable zone is smaller than anticipated because either the concentration of carbon dioxide will be too high (and thus toxic at least to life on Earth) or - for small stars like this - there will be (toxic) carbon monoxide in the atmosphere.
https://phys.org/news/2019-03-complex-life-require-narrow-habitable.html https://phys.org/news/2019-03-complex-life-require-narrow-ha... (good article with link to the paper)
- nine_k 7y agoLife on Earth lived in CO2-dominated atmosphere for 1.5B years. If anything, CO2-rich world which is not overrun by SO2 and chlorine and phosphoric anhydride and scorching heat, like Venus, is as "potentially life-supporting" as it gets, save for a world with actual oxygen-producing life like ours.
- aflag 7y agoLife, uh, finds a way: http://www.bbc.com/earth/story/20170125-there-is-one-animal-that-seems-to-survive-without-oxygen http://www.bbc.com/earth/story/20170125-there-is-one-animal-...