As it turns out Bad Astronomy’s post on how far away is the horizon table relating d to h for much larger values http://blogs.discovermagazine.com/ba.../#.Wh1vFUqnHb0 http://blogs.discovermagazine.com/ba.../#.Wh1vFUqnHb0 Distance to Horizon at 90k http://www.abc.net.au/news/stories/2009/08/22/2663479.htm How Far Away Is…? How Far Away Is…? How Far Away Is…? How Far Away Is…? table relating d to h for much larger values How Far Away Is…? http://blogs.discovermagazine.com... http://www.treehugger.com/files/2009/03/oil_spill_cle How Far Away Is…? blogs.discovermagazine.com this handy equation from Discovery magazine How far away is the horizon? How far away is the horizon? 5.1km table relating d to h for much larger values “How far away is the horizon?” http://blogs.discovermagazine.com/ba.../#.Wh1vFUqnHb0 How Far Away Is…? blogs.discovermagazine.com a bit of math the horizon problem How Far Away Is…? How far away is the horizon? somewhere around 10-12 miles http://blogs.discovermagazine.com/ba.../#.Wh1vFUqnHb0 How far away is the horizon? anups_harmful.php How Far Away Is…? blogs.discovermagazine.com "How far away is the horizon?" Table of distances for earth-sized planets How far away is the horizon?