3 ms·
Not discussed but should be: Prior to the great oxygenation event, Earth's sky was not blue; it was likely red-orange, carbon dioxide and methane being primary
by aaroninsf 8mo ago
Not discussed but should be:
Prior to the great oxygenation event, Earth's sky was not blue; it was likely red-orange, carbon dioxide and methane being primary components.
- mr_toad 8mo agoSurely it would have still been mostly nitrogen.