Timeline for Chance of a breathable atmosphere of any given planet in our galaxy
Current License: CC BY-SA 4.0
2 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jun 16, 2021 at 22:07 | comment | added | Logan R. Kearsley | Not quite... just having photosynthetic lifeforms producing oxygen doesn't mean that any given planet at a particular point in its history will have enough oxygen, or a sufficiently low concentration of carbon dioxide, for example. | |
| Jun 16, 2021 at 5:39 | history | answered | L.Dutch♦ | CC BY-SA 4.0 |