Timeline for How many planets have we discovered that can support human life?
Current License: CC BY-SA 3.0
4 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Dec 7, 2015 at 9:48 | comment | added | Federico | its atmosphere (sorry) | |
| Dec 6, 2015 at 19:05 | vote | accept | nipponese | ||
| Dec 6, 2015 at 16:01 | comment | added | LocalFluff | Even counting Earth as one, is maybe a biased overestimation. Only during the last fifth of its history could a human survive here (just considering oxygenation, other organisms would probably kill us even much later or we would not be fit to eat what was growing during a global ice age and whatnot else). We are not easily replanted. If humans ever go anywhere they'll need to bring a piece of Earth with them, the neighbor will not be a paradise for us. | |
| Dec 6, 2015 at 11:37 | history | answered | James K | CC BY-SA 3.0 |