Naked Science Forum

Non Life Sciences => Physics, Astronomy & Cosmology => Topic started by: acecharly on 24/12/2015 09:38:13

Title: what colours have the sky been in the past?
Post by: acecharly on 24/12/2015 09:38:13

As the atmosphere of the Earth has been different at other times in the past, what colour skies may we have seen in the past?

Title: Re: what colours have the sky been in the past?
Post by: Colin2B on 24/12/2015 10:48:05

If the earth has had no atmosphere then the sky would have been black. With an atmosphere the colour of the sky can be strongly influenced by dust, volcanic ash can give red sky or blue greys.