Cosmo Owner Staff member Dec 4, 2016 #1 This is a BILLION years before there was even any free oxygen in the atmosphere... Incredible to think about the timespans here. I think the ocean would have been green due to the iron content, but this is an interesting picture regardless.
This is a BILLION years before there was even any free oxygen in the atmosphere... Incredible to think about the timespans here. I think the ocean would have been green due to the iron content, but this is an interesting picture regardless.
