Why the sky is dark at night, possibly an answer.
Posted: Thu Feb 08, 2007 2:46 am
It was on another topic the discussion got started on why the sky is dark at night, classic arguments and gut reactions aside; here is some proof of why. This photo is a 100 hour exposure by an xray satellite observatory, and shows very distant galaxies etc, that are xray sources. Even at extreme distance the photo is more empty space than emission source covered.
http://xmm.vilspa.esa.es/external/xmm_s ... 40601a.jpg
(this link now repaired thanks to the edit button
It is surprising how many sources show, like the Hubble deep field photo, this was taken of visibly empty sky.
Viva la Cosmos !
http://xmm.vilspa.esa.es/external/xmm_s ... 40601a.jpg
(this link now repaired thanks to the edit button
It is surprising how many sources show, like the Hubble deep field photo, this was taken of visibly empty sky.
Viva la Cosmos !