Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2013 September 28 Equinox Earth Image Credit: Roscosmos / NTSOMZ / zelenyikot.livejournal.com Courtesy: Igor Tirsky, Vitaliy Egorov Explanation: From a geostationary orbit 36,000 kilometers above t..